diff --git a/glm/core/setup.hpp b/glm/core/setup.hpp
index c842fe20..386abe6c 100644
--- a/glm/core/setup.hpp
+++ b/glm/core/setup.hpp
@@ -561,7 +561,7 @@
 #define GLM_SUPPORT_ANONYMOUS_UNION() \
 	((GLM_LANG & GLM_LANG_CXX98) == GLM_LANG_CXX98)
 
-//#define GLM_SUPPORT_ANONYMOUS_UNION_OF_STRUCTURE() \
+//#define GLM_SUPPORT_ANONYMOUS_UNION_OF_STRUCTURE() <backslash>
 //	(((GLM_LANG & GLM_LANG_CXX11) == GLM_LANG_CXX11) || ((GLM_COMPILER & GLM_COMPILER_VC) && (GLM_LANG & GLM_LANG_CXXMS) == GLM_LANG_CXXMS) || ((GLM_COMPILER & GLM_COMPILER_GCC) && (GLM_LANG == GLM_LANG_CXX0X)))
 
 #define GLM_SUPPORT_ANONYMOUS_UNION_OF_STRUCTURE() \