diff --git a/glm/gtx/simd_quat.hpp b/glm/gtx/simd_quat.hpp
index fd9c2871..fd8daf04 100644
--- a/glm/gtx/simd_quat.hpp
+++ b/glm/gtx/simd_quat.hpp
@@ -71,7 +71,6 @@ namespace detail
 	{
 		typedef float value_type;
 		typedef std::size_t size_type;
-		static size_type value_size();
 
 		typedef fquatSIMD type;
 		typedef tquat<bool, defaultp> bool_type;
diff --git a/glm/gtx/simd_vec4.hpp b/glm/gtx/simd_vec4.hpp
index aa3c6b4c..cd73a602 100644
--- a/glm/gtx/simd_vec4.hpp
+++ b/glm/gtx/simd_vec4.hpp
@@ -94,7 +94,6 @@ namespace detail
 	{
 		typedef float value_type;
 		typedef std::size_t size_type;
-		static size_type value_size();
 
 		typedef fvec4SIMD type;
 		typedef tvec4<bool, highp> bool_type;