diff --git a/include/boost/python/args.hpp b/include/boost/python/args.hpp
index c99daafc..d3b7c5d9 100644
--- a/include/boost/python/args.hpp
+++ b/include/boost/python/args.hpp
@@ -46,10 +46,10 @@ namespace boost { namespace mpl {
 template <class T> struct size;
 template <long N, class Seq> struct at;
 
-#  define BOOST_PP_ITERATION_PARAMS_1 4, (0, BOOST_PYTHON_MAX_ARITY, <boost/python/args.hpp>, 1)
+#  define BOOST_PP_ITERATION_PARAMS_1 (4, (0, BOOST_PYTHON_MAX_ARITY, <boost/python/args.hpp>, 1))
 #  include BOOST_PP_ITERATE()
 
-#  define BOOST_PP_ITERATION_PARAMS_1 4, (0, BOOST_PYTHON_MAX_ARITY - 1, <boost/python/args.hpp>, 2)
+#  define BOOST_PP_ITERATION_PARAMS_1 (4, (0, BOOST_PYTHON_MAX_ARITY - 1, <boost/python/args.hpp>, 2))
 #  include BOOST_PP_ITERATE()
 
 
diff --git a/include/boost/python/call.hpp b/include/boost/python/call.hpp
index 82c07b6f..45ab7712 100644
--- a/include/boost/python/call.hpp
+++ b/include/boost/python/call.hpp
@@ -25,7 +25,7 @@ namespace boost { namespace python {
 # define BOOST_PYTHON_FAST_ARG_TO_PYTHON_GET(n, _) \
     , converter::arg_to_python<A##n>(a##n).get()
 
-#  define BOOST_PP_ITERATION_PARAMS_1 3, (0, BOOST_PYTHON_MAX_ARITY, <boost/python/call.hpp>)
+#  define BOOST_PP_ITERATION_PARAMS_1 (3, (0, BOOST_PYTHON_MAX_ARITY, <boost/python/call.hpp>))
 #  include BOOST_PP_ITERATE()
 
 #  undef BOOST_PYTHON_FAST_ARG_TO_PYTHON_GET
diff --git a/include/boost/python/call_method.hpp b/include/boost/python/call_method.hpp
index c0ced783..26b295d9 100644
--- a/include/boost/python/call_method.hpp
+++ b/include/boost/python/call_method.hpp
@@ -24,7 +24,7 @@ namespace boost { namespace python {
 # define BOOST_PYTHON_FAST_ARG_TO_PYTHON_GET(n, _) \
     , converter::arg_to_python<A##n>(a##n).get()
 
-# define BOOST_PP_ITERATION_PARAMS_1 3, (0, BOOST_PYTHON_MAX_ARITY, <boost/python/call_method.hpp>)
+# define BOOST_PP_ITERATION_PARAMS_1 (3, (0, BOOST_PYTHON_MAX_ARITY, <boost/python/call_method.hpp>))
 # include BOOST_PP_ITERATE()
 
 # undef BOOST_PYTHON_FAST_ARG_TO_PYTHON_GET
diff --git a/include/boost/python/detail/arg_tuple_size.hpp b/include/boost/python/detail/arg_tuple_size.hpp
index 24abae89..bd1933fa 100644
--- a/include/boost/python/detail/arg_tuple_size.hpp
+++ b/include/boost/python/detail/arg_tuple_size.hpp
@@ -41,12 +41,12 @@ template <class F> struct arg_tuple_size;
 
 // Specializations for function pointers
 # define BOOST_PP_ITERATION_PARAMS_1 \
-     4, (0, BOOST_PYTHON_MAX_ARITY, <boost/python/detail/arg_tuple_size.hpp>, BOOST_PYTHON_FUNCTION_POINTER)
+     (4, (0, BOOST_PYTHON_MAX_ARITY, <boost/python/detail/arg_tuple_size.hpp>, BOOST_PYTHON_FUNCTION_POINTER))
 # include BOOST_PP_ITERATE()
 
 // Specializations for member function pointers
 # define BOOST_PP_ITERATION_PARAMS_1 \
-    4, (0, BOOST_PYTHON_CV_COUNT - 1, <boost/python/detail/arg_tuple_size.hpp>, BOOST_PYTHON_POINTER_TO_MEMBER)
+    (4, (0, BOOST_PYTHON_CV_COUNT - 1, <boost/python/detail/arg_tuple_size.hpp>, BOOST_PYTHON_POINTER_TO_MEMBER))
 # include BOOST_PP_ITERATE()
 
 # if defined(BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION)
@@ -94,7 +94,7 @@ char_array<N> arg_tuple_size_helper(
 // Outer iteration over cv-qualifications
 
 # define BOOST_PP_ITERATION_PARAMS_2 \
-    3, (0, BOOST_PYTHON_MAX_ARITY, <boost/python/detail/arg_tuple_size.hpp>)
+    (3, (0, BOOST_PYTHON_MAX_ARITY, <boost/python/detail/arg_tuple_size.hpp>))
 # include BOOST_PP_ITERATE()
 
 #elif BOOST_PP_ITERATION_DEPTH() == 2 && BOOST_PP_RELATIVE_FLAGS(1) == BOOST_PYTHON_POINTER_TO_MEMBER
diff --git a/include/boost/python/detail/caller.hpp b/include/boost/python/detail/caller.hpp
index d8871cd1..43366464 100644
--- a/include/boost/python/detail/caller.hpp
+++ b/include/boost/python/detail/caller.hpp
@@ -39,12 +39,12 @@ struct caller
 
     // function pointers
 #  define BOOST_PP_ITERATION_PARAMS_1 \
-    4, (0, BOOST_PYTHON_MAX_ARITY, <boost/python/detail/caller.hpp>, BOOST_PYTHON_FUNCTION_POINTER)
+    (4, (0, BOOST_PYTHON_MAX_ARITY, <boost/python/detail/caller.hpp>, BOOST_PYTHON_FUNCTION_POINTER))
 #  include BOOST_PP_ITERATE()
 
     // pointers-to-members
 #  define BOOST_PP_ITERATION_PARAMS_1 \
-    4, (0, 3, <boost/python/detail/caller.hpp>, BOOST_PYTHON_POINTER_TO_MEMBER)
+    (4, (0, 3, <boost/python/detail/caller.hpp>, BOOST_PYTHON_POINTER_TO_MEMBER))
 #  include BOOST_PP_ITERATE()
 
 };
@@ -78,7 +78,7 @@ PyObject* operator()(
 #elif BOOST_PP_ITERATION_DEPTH() == 1 && BOOST_PP_ITERATION_FLAGS() == BOOST_PYTHON_POINTER_TO_MEMBER
 // outer over cv-qualifiers
 
-# define BOOST_PP_ITERATION_PARAMS_2 3, (0, BOOST_PYTHON_MAX_ARITY, <boost/python/detail/caller.hpp>)
+# define BOOST_PP_ITERATION_PARAMS_2 (3, (0, BOOST_PYTHON_MAX_ARITY, <boost/python/detail/caller.hpp>))
 # include BOOST_PP_ITERATE()
 
 #elif BOOST_PP_ITERATION_DEPTH() == 2
diff --git a/include/boost/python/detail/member_function_cast.hpp b/include/boost/python/detail/member_function_cast.hpp
index c8c3fc2b..c7ac4fa8 100644
--- a/include/boost/python/detail/member_function_cast.hpp
+++ b/include/boost/python/detail/member_function_cast.hpp
@@ -61,7 +61,7 @@ struct member_function_cast_impl
 #  endif
 
 // Member functions
-#  define BOOST_PP_ITERATION_PARAMS_1 3, (0, 3, <boost/python/detail/member_function_cast.hpp>)
+#  define BOOST_PP_ITERATION_PARAMS_1 (3, (0, 3, <boost/python/detail/member_function_cast.hpp>))
 #  include BOOST_PP_ITERATE()
 };
 
@@ -86,7 +86,7 @@ struct member_function_cast
 #elif BOOST_PP_ITERATION_DEPTH() == 1
 // outer over cv-qualifiers
 
-# define BOOST_PP_ITERATION_PARAMS_2 3, (0, BOOST_PYTHON_MAX_ARITY, <boost/python/detail/member_function_cast.hpp>)
+# define BOOST_PP_ITERATION_PARAMS_2 (3, (0, BOOST_PYTHON_MAX_ARITY, <boost/python/detail/member_function_cast.hpp>))
 # include BOOST_PP_ITERATE()
 
 #elif BOOST_PP_ITERATION_DEPTH() == 2
diff --git a/include/boost/python/detail/result.hpp b/include/boost/python/detail/result.hpp
index 2244671e..742195de 100755
--- a/include/boost/python/detail/result.hpp
+++ b/include/boost/python/detail/result.hpp
@@ -31,11 +31,11 @@ namespace boost { namespace python { namespace detail {
 // to get this to work portably.
 
 #  define BOOST_PP_ITERATION_PARAMS_1 \
-	4, (0, BOOST_PYTHON_MAX_ARITY, <boost/python/detail/result.hpp>, BOOST_PYTHON_FUNCTION_POINTER)
+	(4, (0, BOOST_PYTHON_MAX_ARITY, <boost/python/detail/result.hpp>, BOOST_PYTHON_FUNCTION_POINTER))
 #  include BOOST_PP_ITERATE()
 
 #  define BOOST_PP_ITERATION_PARAMS_1 \
-	4, (0, BOOST_PYTHON_CV_COUNT - 1, <boost/python/detail/result.hpp>, BOOST_PYTHON_POINTER_TO_MEMBER)
+	(4, (0, BOOST_PYTHON_CV_COUNT - 1, <boost/python/detail/result.hpp>, BOOST_PYTHON_POINTER_TO_MEMBER))
 #  include BOOST_PP_ITERATE()
 
 template <class R, class T>
@@ -101,7 +101,7 @@ boost::type<R>* result(R (*pf)(BOOST_PYTHON_UNARY_ENUM(N, A)), int = 0)
 #elif BOOST_PP_ITERATION_DEPTH() == 1 && BOOST_PP_ITERATION_FLAGS() == BOOST_PYTHON_POINTER_TO_MEMBER
 // Outer over cv-qualifiers
 
-# define BOOST_PP_ITERATION_PARAMS_2 3, (0, BOOST_PYTHON_MAX_ARITY, <boost/python/detail/result.hpp>)
+# define BOOST_PP_ITERATION_PARAMS_2 (3, (0, BOOST_PYTHON_MAX_ARITY, <boost/python/detail/result.hpp>))
 # include BOOST_PP_ITERATE()
 
 #elif BOOST_PP_ITERATION_DEPTH() == 2
diff --git a/include/boost/python/detail/returning.hpp b/include/boost/python/detail/returning.hpp
index 498cc824..84609493 100644
--- a/include/boost/python/detail/returning.hpp
+++ b/include/boost/python/detail/returning.hpp
@@ -36,15 +36,15 @@ template <class R>
 struct returning
 {
     // Specializations for function pointers
-#  define BOOST_PP_ITERATION_PARAMS_1                                           \
-        4, (0, BOOST_PYTHON_MAX_ARITY, <boost/python/detail/returning.hpp>,     \
-            BOOST_PYTHON_FUNCTION_POINTER | BOOST_PYTHON_RETURNING_NON_VOID)
+#  define BOOST_PP_ITERATION_PARAMS_1                                            \
+        (4, (0, BOOST_PYTHON_MAX_ARITY, <boost/python/detail/returning.hpp>,     \
+            BOOST_PYTHON_FUNCTION_POINTER | BOOST_PYTHON_RETURNING_NON_VOID))
 #  include BOOST_PP_ITERATE()
 
     // Specializations for member function pointers
-#  define BOOST_PP_ITERATION_PARAMS_1                                           \
-        4, (0, 3, <boost/python/detail/returning.hpp>,                          \
-            BOOST_PYTHON_POINTER_TO_MEMBER | BOOST_PYTHON_RETURNING_NON_VOID)
+#  define BOOST_PP_ITERATION_PARAMS_1                                            \
+        (4, (0, 3, <boost/python/detail/returning.hpp>,                          \
+            BOOST_PYTHON_POINTER_TO_MEMBER | BOOST_PYTHON_RETURNING_NON_VOID))
 #  include BOOST_PP_ITERATE()
 };
 
@@ -53,15 +53,15 @@ struct returning<void>
 {
     typedef void R;
     // Specializations for function pointers
-#  define BOOST_PP_ITERATION_PARAMS_1                                           \
-        4, (0, BOOST_PYTHON_MAX_ARITY, <boost/python/detail/returning.hpp>,     \
-            BOOST_PYTHON_FUNCTION_POINTER | BOOST_PYTHON_RETURNING_VOID)
+#  define BOOST_PP_ITERATION_PARAMS_1                                            \
+        (4, (0, BOOST_PYTHON_MAX_ARITY, <boost/python/detail/returning.hpp>,     \
+            BOOST_PYTHON_FUNCTION_POINTER | BOOST_PYTHON_RETURNING_VOID))
 #  include BOOST_PP_ITERATE()
 
     // Specializations for member function pointers
-#  define BOOST_PP_ITERATION_PARAMS_1                                           \
-        4, (0, 3, <boost/python/detail/returning.hpp>,                          \
-            BOOST_PYTHON_POINTER_TO_MEMBER | BOOST_PYTHON_RETURNING_VOID)
+#  define BOOST_PP_ITERATION_PARAMS_1                                            \
+        (4, (0, 3, <boost/python/detail/returning.hpp>,                          \
+            BOOST_PYTHON_POINTER_TO_MEMBER | BOOST_PYTHON_RETURNING_VOID))
 #  include BOOST_PP_ITERATE()
 };
 
@@ -133,8 +133,8 @@ struct returning<void>
 #elif BOOST_PP_ITERATION_DEPTH() == 1 && BOOST_PP_ITERATION_FLAGS() & BOOST_PYTHON_POINTER_TO_MEMBER
 
     // Outer iteration over cv-qualifications
-# define BOOST_PP_ITERATION_PARAMS_2                                    \
-    3, (0, BOOST_PYTHON_MAX_ARITY, <boost/python/detail/returning.hpp>)
+# define BOOST_PP_ITERATION_PARAMS_2                                      \
+    (3, (0, BOOST_PYTHON_MAX_ARITY, <boost/python/detail/returning.hpp>))
 # include BOOST_PP_ITERATE()
 
 #elif BOOST_PP_ITERATION_DEPTH() == 2 && BOOST_PP_RELATIVE_FLAGS(1) & BOOST_PYTHON_POINTER_TO_MEMBER
diff --git a/include/boost/python/detail/target.hpp b/include/boost/python/detail/target.hpp
index d8033a8c..d8eb7d68 100644
--- a/include/boost/python/detail/target.hpp
+++ b/include/boost/python/detail/target.hpp
@@ -20,11 +20,11 @@
 namespace boost { namespace python { namespace detail {
 
 #  define BOOST_PP_ITERATION_PARAMS_1 \
-	4, (0, BOOST_PYTHON_MAX_ARITY, <boost/python/detail/target.hpp>, BOOST_PYTHON_FUNCTION_POINTER)
+	(4, (0, BOOST_PYTHON_MAX_ARITY, <boost/python/detail/target.hpp>, BOOST_PYTHON_FUNCTION_POINTER))
 #  include BOOST_PP_ITERATE()
 
 #  define BOOST_PP_ITERATION_PARAMS_1 \
-	4, (0, BOOST_PYTHON_CV_COUNT - 1, <boost/python/detail/target.hpp>, BOOST_PYTHON_POINTER_TO_MEMBER)
+	(4, (0, BOOST_PYTHON_CV_COUNT - 1, <boost/python/detail/target.hpp>, BOOST_PYTHON_POINTER_TO_MEMBER))
 #  include BOOST_PP_ITERATE()
 
 template <class R, class T>
@@ -52,7 +52,7 @@ boost::type<BOOST_PP_IF(N, A0, void)>* target(R (*)(BOOST_PYTHON_UNARY_ENUM(N, A
 #elif BOOST_PP_ITERATION_DEPTH() == 1 && BOOST_PP_ITERATION_FLAGS() == BOOST_PYTHON_POINTER_TO_MEMBER
 // Outer over cv-qualifiers
 
-# define BOOST_PP_ITERATION_PARAMS_2 3, (0, BOOST_PYTHON_MAX_ARITY, <boost/python/detail/target.hpp>)
+# define BOOST_PP_ITERATION_PARAMS_2 (3, (0, BOOST_PYTHON_MAX_ARITY, <boost/python/detail/target.hpp>))
 # include BOOST_PP_ITERATE()
 
 #elif BOOST_PP_ITERATION_DEPTH() == 2
diff --git a/include/boost/python/object/make_holder.hpp b/include/boost/python/object/make_holder.hpp
index fa6614eb..58a185b0 100644
--- a/include/boost/python/object/make_holder.hpp
+++ b/include/boost/python/object/make_holder.hpp
@@ -31,7 +31,7 @@ template <int nargs> struct make_holder;
 #  define BOOST_PYTHON_DO_FORWARD_ARG(index, _) , f##index(a##index)
 
 // specializations...
-#  define BOOST_PP_ITERATION_PARAMS_1 3, (0, BOOST_PYTHON_MAX_ARITY, <boost/python/object/make_holder.hpp>)
+#  define BOOST_PP_ITERATION_PARAMS_1 (3, (0, BOOST_PYTHON_MAX_ARITY, <boost/python/object/make_holder.hpp>))
 #  include BOOST_PP_ITERATE()
 
 #  undef BOOST_PYTHON_FORWARD_ARG
diff --git a/include/boost/python/object/pointer_holder.hpp b/include/boost/python/object/pointer_holder.hpp
index 3f495250..72cecdfc 100644
--- a/include/boost/python/object/pointer_holder.hpp
+++ b/include/boost/python/object/pointer_holder.hpp
@@ -38,7 +38,7 @@ struct pointer_holder : instance_holder
 
     // Forward construction to the held object
 
-#  define BOOST_PP_ITERATION_PARAMS_1 4, (0, BOOST_PYTHON_MAX_ARITY, <boost/python/object/pointer_holder.hpp>, 1)
+#  define BOOST_PP_ITERATION_PARAMS_1 (4, (0, BOOST_PYTHON_MAX_ARITY, <boost/python/object/pointer_holder.hpp>, 1))
 #  include BOOST_PP_ITERATE()
 
  private: // required holder implementation
@@ -58,7 +58,7 @@ struct pointer_holder_back_reference : instance_holder
     pointer_holder_back_reference(Pointer);
 
     // Forward construction to the held object
-#  define BOOST_PP_ITERATION_PARAMS_1 4, (0, BOOST_PYTHON_MAX_ARITY, <boost/python/object/pointer_holder.hpp>, 2)
+#  define BOOST_PP_ITERATION_PARAMS_1 (4, (0, BOOST_PYTHON_MAX_ARITY, <boost/python/object/pointer_holder.hpp>, 2))
 #  include BOOST_PP_ITERATE()
 
  private: // required holder implementation
diff --git a/include/boost/python/object/value_holder.hpp b/include/boost/python/object/value_holder.hpp
index ac42f561..353cd929 100644
--- a/include/boost/python/object/value_holder.hpp
+++ b/include/boost/python/object/value_holder.hpp
@@ -30,7 +30,7 @@ template <class Held>
 struct value_holder : instance_holder
 {
 	// Forward construction to the held object
-#  define BOOST_PP_ITERATION_PARAMS_1 4, (0, BOOST_PYTHON_MAX_ARITY, <boost/python/object/value_holder.hpp>, 1)
+#  define BOOST_PP_ITERATION_PARAMS_1 (4, (0, BOOST_PYTHON_MAX_ARITY, <boost/python/object/value_holder.hpp>, 1))
 #  include BOOST_PP_ITERATE()
 
  private: // required holder implementation
@@ -44,7 +44,7 @@ template <class Held, class BackReferenceType>
 struct value_holder_back_reference : instance_holder
 {
     // Forward construction to the held object
-#  define BOOST_PP_ITERATION_PARAMS_1 4, (0, BOOST_PYTHON_MAX_ARITY, <boost/python/object/value_holder.hpp>, 2)
+#  define BOOST_PP_ITERATION_PARAMS_1 (4, (0, BOOST_PYTHON_MAX_ARITY, <boost/python/object/value_holder.hpp>, 2))
 #  include BOOST_PP_ITERATE()
 
 private: // required holder implementation
diff --git a/include/boost/python/object_core.hpp b/include/boost/python/object_core.hpp
index 2fd1804f..35817f21 100755
--- a/include/boost/python/object_core.hpp
+++ b/include/boost/python/object_core.hpp
@@ -102,7 +102,7 @@ namespace api
       //
       object operator()() const;
 
-# define BOOST_PP_ITERATION_PARAMS_1 3, (1, BOOST_PYTHON_MAX_ARITY, <boost/python/object_call.hpp>)
+# define BOOST_PP_ITERATION_PARAMS_1 (3, (1, BOOST_PYTHON_MAX_ARITY, <boost/python/object_call.hpp>))
 # include BOOST_PP_ITERATE()
 
       // truth value testing