diff --git a/glm/detail/setup.hpp b/glm/detail/setup.hpp
index 43083743..dbd81c1f 100644
--- a/glm/detail/setup.hpp
+++ b/glm/detail/setup.hpp
@@ -406,7 +406,7 @@
 #	define GLM_HAS_CONSTEXPR_PARTIAL GLM_HAS_CONSTEXPR
 #else
 #	define GLM_HAS_CONSTEXPR ((GLM_LANG & GLM_LANG_CXX0X_FLAG) && (\
-		((GLM_COMPILER & GLM_COMPILER_GCC) && (GLM_COMPILER >= GLM_COMPILER_GCC46))))
+		((GLM_COMPILER & GLM_COMPILER_GCC) && (GLM_COMPILER >= GLM_COMPILER_GCC48)))) // GCC 4.6 support constexpr but there is a compiler bug causing a crash
 #	define GLM_HAS_CONSTEXPR_PARTIAL (GLM_HAS_CONSTEXPR || ((GLM_COMPILER & GLM_COMPILER_VC) && (GLM_COMPILER >= GLM_COMPILER_VC2015)))
 #endif
 
@@ -743,13 +743,6 @@
 #	define GLM_CONSTEXPR_SIMD
 #endif
 
-// GCC 4.6 has a bug causing a compiler crash
-#if GLM_COMPILER & GLM_COMPILER_GCC
-#	define GLM_CONSTEXPR_GCC
-#else
-#	define GLM_CONSTEXPR_GCC GLM_CONSTEXPR
-#endif
-
 #ifdef GLM_FORCE_EXPLICIT_CTOR
 #	define GLM_EXPLICIT explicit
 #else