diff --git a/include/boost/python/override.hpp b/include/boost/python/override.hpp
old mode 100755
new mode 100644
index d5a95b83..39714257
--- a/include/boost/python/override.hpp
+++ b/include/boost/python/override.hpp
@@ -77,7 +77,7 @@ namespace detail
       template <class T>
       T unchecked(type<T>* = 0)
       {
-          return extract<T>(m_obj)();
+          return extract<T>(m_obj.get())();
       }
    private:
       mutable handle<> m_obj;
diff --git a/src/converter/builtin_converters.cpp b/src/converter/builtin_converters.cpp
index 19f0126c..c7c95ea8 100644
--- a/src/converter/builtin_converters.cpp
+++ b/src/converter/builtin_converters.cpp
@@ -366,7 +366,9 @@ namespace
       static PyTypeObject const* get_pytype() { return &PyFloat_Type;}
   };
 
+#if PY_VERSION_HEX >= 0x03000000
   unaryfunc py_unicode_as_string_unaryfunc = PyUnicode_AsUTF8String;
+#endif
 
   // A SlotPolicy for extracting C++ strings from Python objects.
   struct string_rvalue_from_python
diff --git a/src/converter/from_python.cpp b/src/converter/from_python.cpp
index 0af47609..9678be1c 100644
--- a/src/converter/from_python.cpp
+++ b/src/converter/from_python.cpp
@@ -44,11 +44,8 @@ BOOST_PYTHON_DECL rvalue_from_python_stage1_data rvalue_from_python_stage1(
     // First check to see if it's embedded in an extension class
     // instance, as a special case.
     data.convertible = objects::find_instance_impl(source, converters.target_type, converters.is_shared_ptr);
-    if (data.convertible)
-    {
         data.construct = 0;
-    }
-    else
+    if (!data.convertible)
     {
         for (rvalue_from_python_chain const* chain = converters.rvalue_chain;
              chain != 0;
diff --git a/src/object/class.cpp b/src/object/class.cpp
index 3f818d82..aeef688e 100644
--- a/src/object/class.cpp
+++ b/src/object/class.cpp
@@ -76,11 +76,11 @@ extern "C"
   static int property_init(PyObject *self, PyObject *args, PyObject *kwds)
   {
       PyObject *get = NULL, *set = NULL, *del = NULL, *doc = NULL;
-      static char *kwlist[] = {"fget", "fset", "fdel", "doc", 0};
+      static const char *kwlist[] = {"fget", "fset", "fdel", "doc", 0};
       propertyobject *prop = (propertyobject *)self;
 
       if (!PyArg_ParseTupleAndKeywords(args, kwds, "|OOOO:property",
-                  kwlist, &get, &set, &del, &doc))
+                  const_cast<char **>(kwlist), &get, &set, &del, &doc))
           return -1;
 
       if (get == Py_None)