diff --git a/include/boost/phoenix/stl/cmath.hpp b/include/boost/phoenix/stl/cmath.hpp
index 3eedeaf..7db25c4 100644
--- a/include/boost/phoenix/stl/cmath.hpp
+++ b/include/boost/phoenix/stl/cmath.hpp
@@ -18,7 +18,7 @@ namespace boost {
 
 #if (defined (BOOST_NO_CXX11_DECLTYPE) || \
      defined (BOOST_INTEL_CXX_VERSION) || \
-             (BOOST_GCC_VERSION < 40500) ))
+             (BOOST_GCC_VERSION < 40500) )
 #define BOOST_PHOENIX_MATH_FUNCTION(name, n)                            \
     namespace phoenix_impl {                                            \
     struct name ## _impl {                                              \