diff --git a/glm/detail/setup.hpp b/glm/detail/setup.hpp
index e2f65e88..a32406d5 100644
--- a/glm/detail/setup.hpp
+++ b/glm/detail/setup.hpp
@@ -512,7 +512,7 @@
 	((GLM_LANG & GLM_LANG_CXX0X_FLAG) && ((GLM_COMPILER & GLM_COMPILER_VC) && (GLM_COMPILER >= GLM_COMPILER_VC2013))) || \
 	((GLM_LANG & GLM_LANG_CXX0X_FLAG) && ((GLM_COMPILER & GLM_COMPILER_INTEL) && (GLM_COMPILER >= GLM_COMPILER_INTEL14))) || \
 	((GLM_LANG & GLM_LANG_CXX0X_FLAG) && (GLM_COMPILER & GLM_COMPILER_GCC) && (GLM_COMPILER >= GLM_COMPILER_GCC45)) || \
-	__has_feature(cxx_explicit_conversions)
+	__has_feature(cxx_explicit_conversions))
 
 #define GLM_HAS_STL_ARRAY ( \
 	(GLM_LANG & GLM_LANG_CXX11_FLAG) || \
diff --git a/glm/gtc/quaternion.inl b/glm/gtc/quaternion.inl
index d9615ce1..3eb598ce 100644
--- a/glm/gtc/quaternion.inl
+++ b/glm/gtc/quaternion.inl
@@ -190,7 +190,8 @@ namespace detail
 	{
 		*this = quat_cast(m);
 	}
-	
+
+#	if GLM_HAS_EXPLICIT_CONVERSION_OPERATORS
 	template <typename T, precision P>
 	GLM_FUNC_QUALIFIER tquat<T, P>::operator tmat3x3<T, P>()
 	{
@@ -202,6 +203,7 @@ namespace detail
 	{
 		return mat4_cast(*this);
 	}
+#	endif//GLM_HAS_EXPLICIT_CONVERSION_OPERATORS
 
 	template <typename T, precision P>
 	GLM_FUNC_QUALIFIER tquat<T, P> conjugate(tquat<T, P> const & q)