diff --git a/glm/detail/setup.hpp b/glm/detail/setup.hpp
index 8969678c..58cf0b2a 100644
--- a/glm/detail/setup.hpp
+++ b/glm/detail/setup.hpp
@@ -742,6 +742,14 @@
 #	define GLM_RELAXED_CONSTEXPR const
 #endif
 
+#if GLM_LANG >= GLM_LANG_CXX14
+#	define GLM_CONSTEXPR_CXX14 GLM_CONSTEXPR
+#	define GLM_CONSTEXPR_CTOR_CXX14 GLM_CONSTEXPR_CTOR
+#else
+#	define GLM_CONSTEXPR_CXX14
+#	define GLM_CONSTEXPR_CTOR_CXX14
+#endif
+
 #if GLM_ARCH == GLM_ARCH_PURE
 #	define GLM_CONSTEXPR_SIMD GLM_CONSTEXPR_CTOR
 #else