diff --git a/glm/detail/setup.hpp b/glm/detail/setup.hpp
index dda0b805..eea84732 100644
--- a/glm/detail/setup.hpp
+++ b/glm/detail/setup.hpp
@@ -713,7 +713,11 @@
 
 #if GLM_HAS_CONSTEXPR
 #	define GLM_CONSTEXPR constexpr
-#	define GLM_CONSTEXPR_CTOR constexpr
+//#	if GLM_ARCH == GLM_ARCH_PURE
+#		define GLM_CONSTEXPR_CTOR constexpr
+//#	else
+//#		define GLM_CONSTEXPR_CTOR
+//#	endif
 #	define GLM_RELAXED_CONSTEXPR constexpr
 #elif GLM_HAS_CONSTEXPR_PARTIAL
 #	define GLM_CONSTEXPR constexpr
@@ -725,12 +729,6 @@
 #	define GLM_RELAXED_CONSTEXPR const
 #endif
 
-#if GLM_ARCH == GLM_ARCH_PURE
-#	define GLM_CONSTEXPR_SIMD GLM_CONSTEXPR
-#else
-#	define GLM_CONSTEXPR_SIMD
-#endif
-
 #ifdef GLM_FORCE_EXPLICIT_CTOR
 #	define GLM_EXPLICIT explicit
 #else
diff --git a/glm/detail/type_vec4.hpp b/glm/detail/type_vec4.hpp
index 5a03cd47..71c1efe2 100644
--- a/glm/detail/type_vec4.hpp
+++ b/glm/detail/type_vec4.hpp
@@ -86,24 +86,24 @@ namespace glm
 
 		// -- Implicit basic constructors --
 
-		GLM_FUNC_DECL GLM_CONSTEXPR tvec4() GLM_DEFAULT_CTOR;
-		GLM_FUNC_DECL GLM_CONSTEXPR tvec4(tvec4<T, P> const& v) GLM_DEFAULT;
+		GLM_FUNC_DECL GLM_CONSTEXPR_CTOR tvec4() GLM_DEFAULT_CTOR;
+		GLM_FUNC_DECL GLM_CONSTEXPR_CTOR tvec4(tvec4<T, P> const& v) GLM_DEFAULT;
 		template <precision Q>
-		GLM_FUNC_DECL GLM_CONSTEXPR tvec4(tvec4<T, Q> const& v);
+		GLM_FUNC_DECL GLM_CONSTEXPR_CTOR tvec4(tvec4<T, Q> const& v);
 
 		// -- Explicit basic constructors --
 
 		GLM_FUNC_DECL GLM_CONSTEXPR_CTOR explicit tvec4(ctor);
-		GLM_FUNC_DECL GLM_CONSTEXPR_SIMD explicit tvec4(T scalar);
-		GLM_FUNC_DECL GLM_CONSTEXPR_SIMD tvec4(T a, T b, T c, T d);
+		GLM_FUNC_DECL GLM_CONSTEXPR_CTOR explicit tvec4(T scalar);
+		GLM_FUNC_DECL GLM_CONSTEXPR_CTOR tvec4(T a, T b, T c, T d);
 
 		// -- Conversion scalar constructors --
 
 		/// Explicit converions (From section 5.4.1 Conversion and scalar constructors of GLSL 1.30.08 specification)
 		template <typename A, typename B, typename C, typename D>
-		GLM_FUNC_DECL GLM_CONSTEXPR_SIMD tvec4(A a, B b, C c, D d);
+		GLM_FUNC_DECL GLM_CONSTEXPR_CTOR tvec4(A a, B b, C c, D d);
 		template <typename A, typename B, typename C, typename D>
-		GLM_FUNC_DECL GLM_CONSTEXPR tvec4(tvec1<A, P> const& a, tvec1<B, P> const& b, tvec1<C, P> const& c, tvec1<D, P> const& d);
+		GLM_FUNC_DECL GLM_CONSTEXPR_CTOR tvec4(tvec1<A, P> const& a, tvec1<B, P> const& b, tvec1<C, P> const& c, tvec1<D, P> const& d);
 
 		// -- Conversion vector constructors --
 
diff --git a/glm/detail/type_vec4.inl b/glm/detail/type_vec4.inl
index 496da9d6..213b1bb4 100644
--- a/glm/detail/type_vec4.inl
+++ b/glm/detail/type_vec4.inl
@@ -156,7 +156,7 @@ namespace detail
 
 #	if !GLM_HAS_DEFAULTED_FUNCTIONS || !defined(GLM_FORCE_NO_CTOR_INIT)
 		template <typename T, precision P>
-		GLM_FUNC_QUALIFIER GLM_CONSTEXPR tvec4<T, P>::tvec4()
+		GLM_FUNC_QUALIFIER GLM_CONSTEXPR_CTOR tvec4<T, P>::tvec4()
 #			ifndef GLM_FORCE_NO_CTOR_INIT
 				: x(0), y(0), z(0), w(0)
 #			endif
@@ -165,14 +165,14 @@ namespace detail
 
 #	if !GLM_HAS_DEFAULTED_FUNCTIONS
 		template <typename T, precision P>
-		GLM_FUNC_QUALIFIER GLM_CONSTEXPR tvec4<T, P>::tvec4(tvec4<T, P> const & v)
+		GLM_FUNC_QUALIFIER GLM_CONSTEXPR_CTOR tvec4<T, P>::tvec4(tvec4<T, P> const & v)
 			: x(v.x), y(v.y), z(v.z), w(v.w)
 		{}
 #	endif//!GLM_HAS_DEFAULTED_FUNCTIONS
 
 	template <typename T, precision P>
 	template <precision Q>
-	GLM_FUNC_QUALIFIER GLM_CONSTEXPR tvec4<T, P>::tvec4(tvec4<T, Q> const & v)
+	GLM_FUNC_QUALIFIER GLM_CONSTEXPR_CTOR tvec4<T, P>::tvec4(tvec4<T, Q> const & v)
 		: x(v.x), y(v.y), z(v.z), w(v.w)
 	{}
 
@@ -183,12 +183,12 @@ namespace detail
 	{}
 
 	template <typename T, precision P>
-	GLM_FUNC_QUALIFIER GLM_CONSTEXPR_SIMD tvec4<T, P>::tvec4(T scalar)
+	GLM_FUNC_QUALIFIER GLM_CONSTEXPR_CTOR tvec4<T, P>::tvec4(T scalar)
 		: x(scalar), y(scalar), z(scalar), w(scalar)
 	{}
 
 	template <typename T, precision P>
-	GLM_FUNC_QUALIFIER GLM_CONSTEXPR_SIMD tvec4<T, P>::tvec4(T a, T b, T c, T d)
+	GLM_FUNC_QUALIFIER GLM_CONSTEXPR_CTOR tvec4<T, P>::tvec4(T a, T b, T c, T d)
 		: x(a), y(b), z(c), w(d)
 	{}
 
@@ -196,7 +196,7 @@ namespace detail
 
 	template <typename T, precision P>
 	template <typename A, typename B, typename C, typename D>
-	GLM_FUNC_QUALIFIER GLM_CONSTEXPR_SIMD tvec4<T, P>::tvec4(A a, B b, C c, D d) :
+	GLM_FUNC_QUALIFIER GLM_CONSTEXPR_CTOR tvec4<T, P>::tvec4(A a, B b, C c, D d) :
 		x(static_cast<T>(a)),
 		y(static_cast<T>(b)),
 		z(static_cast<T>(c)),
@@ -205,7 +205,7 @@ namespace detail
 
 	template <typename T, precision P>
 	template <typename A, typename B, typename C, typename D>
-	GLM_FUNC_QUALIFIER GLM_CONSTEXPR tvec4<T, P>::tvec4(tvec1<A, P> const & a, tvec1<B, P> const & b, tvec1<C, P> const & c, tvec1<D, P> const & d) :
+	GLM_FUNC_QUALIFIER GLM_CONSTEXPR_CTOR tvec4<T, P>::tvec4(tvec1<A, P> const & a, tvec1<B, P> const & b, tvec1<C, P> const & c, tvec1<D, P> const & d) :
 		x(static_cast<T>(a.x)),
 		y(static_cast<T>(b.x)),
 		z(static_cast<T>(c.x)),
diff --git a/glm/detail/type_vec4_simd.inl b/glm/detail/type_vec4_simd.inl
index 55db422e..cdddd63b 100644
--- a/glm/detail/type_vec4_simd.inl
+++ b/glm/detail/type_vec4_simd.inl
@@ -363,117 +363,117 @@ namespace detail
 #	endif//!GLM_HAS_DEFAULTED_FUNCTIONS
 
 	template <>
-	GLM_FUNC_QUALIFIER GLM_CONSTEXPR_SIMD tvec4<float, aligned_lowp>::tvec4(float s) :
+	GLM_FUNC_QUALIFIER GLM_CONSTEXPR_CTOR tvec4<float, aligned_lowp>::tvec4(float s) :
 		data(_mm_set1_ps(s))
 	{}
 
 	template <>
-	GLM_FUNC_QUALIFIER GLM_CONSTEXPR_SIMD tvec4<float, aligned_mediump>::tvec4(float s) :
+	GLM_FUNC_QUALIFIER GLM_CONSTEXPR_CTOR tvec4<float, aligned_mediump>::tvec4(float s) :
 		data(_mm_set1_ps(s))
 	{}
 
 	template <>
-	GLM_FUNC_QUALIFIER GLM_CONSTEXPR_SIMD tvec4<float, aligned_highp>::tvec4(float s) :
+	GLM_FUNC_QUALIFIER GLM_CONSTEXPR_CTOR tvec4<float, aligned_highp>::tvec4(float s) :
 		data(_mm_set1_ps(s))
 	{}
 
 #	if GLM_ARCH & GLM_ARCH_AVX_BIT
 	template <>
-	GLM_FUNC_QUALIFIER GLM_CONSTEXPR_SIMD tvec4<double, aligned_lowp>::tvec4(double s) :
+	GLM_FUNC_QUALIFIER GLM_CONSTEXPR_CTOR tvec4<double, aligned_lowp>::tvec4(double s) :
 		data(_mm256_set1_pd(s))
 	{}
 
 	template <>
-	GLM_FUNC_QUALIFIER GLM_CONSTEXPR_SIMD tvec4<double, aligned_mediump>::tvec4(double s) :
+	GLM_FUNC_QUALIFIER GLM_CONSTEXPR_CTOR tvec4<double, aligned_mediump>::tvec4(double s) :
 		data(_mm256_set1_pd(s))
 	{}
 
 	template <>
-	GLM_FUNC_QUALIFIER GLM_CONSTEXPR_SIMD tvec4<double, aligned_highp>::tvec4(double s) :
+	GLM_FUNC_QUALIFIER GLM_CONSTEXPR_CTOR tvec4<double, aligned_highp>::tvec4(double s) :
 		data(_mm256_set1_pd(s))
 	{}
 #	endif
 
 	template <>
-	GLM_FUNC_QUALIFIER GLM_CONSTEXPR_SIMD tvec4<int32, aligned_lowp>::tvec4(int32 s) :
+	GLM_FUNC_QUALIFIER GLM_CONSTEXPR_CTOR tvec4<int32, aligned_lowp>::tvec4(int32 s) :
 		data(_mm_set1_epi32(s))
 	{}
 
 	template <>
-	GLM_FUNC_QUALIFIER GLM_CONSTEXPR_SIMD tvec4<int32, aligned_mediump>::tvec4(int32 s) :
+	GLM_FUNC_QUALIFIER GLM_CONSTEXPR_CTOR tvec4<int32, aligned_mediump>::tvec4(int32 s) :
 		data(_mm_set1_epi32(s))
 	{}
 
 	template <>
-	GLM_FUNC_QUALIFIER GLM_CONSTEXPR_SIMD tvec4<int32, aligned_highp>::tvec4(int32 s) :
+	GLM_FUNC_QUALIFIER GLM_CONSTEXPR_CTOR tvec4<int32, aligned_highp>::tvec4(int32 s) :
 		data(_mm_set1_epi32(s))
 	{}
 
 #	if GLM_ARCH & GLM_ARCH_AVX2_BIT
 	template <>
-	GLM_FUNC_QUALIFIER GLM_CONSTEXPR_SIMD tvec4<int64, aligned_lowp>::tvec4(int64 s) :
+	GLM_FUNC_QUALIFIER GLM_CONSTEXPR_CTOR tvec4<int64, aligned_lowp>::tvec4(int64 s) :
 		data(_mm256_set1_epi64x(s))
 	{}
 
 	template <>
-	GLM_FUNC_QUALIFIER GLM_CONSTEXPR_SIMD tvec4<int64, aligned_mediump>::tvec4(int64 s) :
+	GLM_FUNC_QUALIFIER GLM_CONSTEXPR_CTOR tvec4<int64, aligned_mediump>::tvec4(int64 s) :
 		data(_mm256_set1_epi64x(s))
 	{}
 
 	template <>
-	GLM_FUNC_QUALIFIER GLM_CONSTEXPR_SIMD tvec4<int64, aligned_highp>::tvec4(int64 s) :
+	GLM_FUNC_QUALIFIER GLM_CONSTEXPR_CTOR tvec4<int64, aligned_highp>::tvec4(int64 s) :
 		data(_mm256_set1_epi64x(s))
 	{}
 #	endif
 
 	template <>
-	GLM_FUNC_QUALIFIER GLM_CONSTEXPR_SIMD tvec4<float, aligned_lowp>::tvec4(float a, float b, float c, float d) :
+	GLM_FUNC_QUALIFIER GLM_CONSTEXPR_CTOR tvec4<float, aligned_lowp>::tvec4(float a, float b, float c, float d) :
 		data(_mm_set_ps(d, c, b, a))
 	{}
 
 	template <>
-	GLM_FUNC_QUALIFIER GLM_CONSTEXPR_SIMD tvec4<float, aligned_mediump>::tvec4(float a, float b, float c, float d) :
+	GLM_FUNC_QUALIFIER GLM_CONSTEXPR_CTOR tvec4<float, aligned_mediump>::tvec4(float a, float b, float c, float d) :
 		data(_mm_set_ps(d, c, b, a))
 	{}
 
 	template <>
-	GLM_FUNC_QUALIFIER GLM_CONSTEXPR_SIMD tvec4<float, aligned_highp>::tvec4(float a, float b, float c, float d) :
+	GLM_FUNC_QUALIFIER GLM_CONSTEXPR_CTOR tvec4<float, aligned_highp>::tvec4(float a, float b, float c, float d) :
 		data(_mm_set_ps(d, c, b, a))
 	{}
 
 	template <>
 	template <>
-	GLM_FUNC_QUALIFIER GLM_CONSTEXPR_SIMD tvec4<int32, aligned_lowp>::tvec4(int32 a, int32 b, int32 c, int32 d) :
+	GLM_FUNC_QUALIFIER GLM_CONSTEXPR_CTOR tvec4<int32, aligned_lowp>::tvec4(int32 a, int32 b, int32 c, int32 d) :
 		data(_mm_set_epi32(d, c, b, a))
 	{}
 
 	template <>
 	template <>
-	GLM_FUNC_QUALIFIER GLM_CONSTEXPR_SIMD tvec4<int32, aligned_mediump>::tvec4(int32 a, int32 b, int32 c, int32 d) :
+	GLM_FUNC_QUALIFIER GLM_CONSTEXPR_CTOR tvec4<int32, aligned_mediump>::tvec4(int32 a, int32 b, int32 c, int32 d) :
 		data(_mm_set_epi32(d, c, b, a))
 	{}
 
 	template <>
 	template <>
-	GLM_FUNC_QUALIFIER GLM_CONSTEXPR_SIMD tvec4<int32, aligned_highp>::tvec4(int32 a, int32 b, int32 c, int32 d) :
+	GLM_FUNC_QUALIFIER GLM_CONSTEXPR_CTOR tvec4<int32, aligned_highp>::tvec4(int32 a, int32 b, int32 c, int32 d) :
 		data(_mm_set_epi32(d, c, b, a))
 	{}
 
 	template <>
 	template <>
-	GLM_FUNC_QUALIFIER GLM_CONSTEXPR_SIMD tvec4<float, aligned_lowp>::tvec4(int32 a, int32 b, int32 c, int32 d) :
+	GLM_FUNC_QUALIFIER GLM_CONSTEXPR_CTOR tvec4<float, aligned_lowp>::tvec4(int32 a, int32 b, int32 c, int32 d) :
 		data(_mm_castsi128_ps(_mm_set_epi32(d, c, b, a)))
 	{}
 
 	template <>
 	template <>
-	GLM_FUNC_QUALIFIER GLM_CONSTEXPR_SIMD tvec4<float, aligned_mediump>::tvec4(int32 a, int32 b, int32 c, int32 d) :
+	GLM_FUNC_QUALIFIER GLM_CONSTEXPR_CTOR tvec4<float, aligned_mediump>::tvec4(int32 a, int32 b, int32 c, int32 d) :
 		data(_mm_castsi128_ps(_mm_set_epi32(d, c, b, a)))
 	{}
 
 	template <>
 	template <>
-	GLM_FUNC_QUALIFIER GLM_CONSTEXPR_SIMD tvec4<float, aligned_highp>::tvec4(int32 a, int32 b, int32 c, int32 d) :
+	GLM_FUNC_QUALIFIER GLM_CONSTEXPR_CTOR tvec4<float, aligned_highp>::tvec4(int32 a, int32 b, int32 c, int32 d) :
 		data(_mm_castsi128_ps(_mm_set_epi32(d, c, b, a)))
 	{}
 }//namespace glm
diff --git a/readme.md b/readme.md
index 6326d385..01dddd46 100644
--- a/readme.md
+++ b/readme.md
@@ -53,7 +53,7 @@ glm::mat4 camera(float Translate, glm::vec2 const & Rotate)
 
 #### [GLM 0.9.8.2](https://github.com/g-truc/glm/tree/0.9.8) - 2016-09-25
 ##### Fixes:
-
+- Fixed Visual C++ constexpr build error #555, #556
 
 #### [GLM 0.9.8.1](https://github.com/g-truc/glm/releases/tag/0.9.8.1) - 2016-09-25
 ##### Improvements:
diff --git a/test/core/CMakeLists.txt b/test/core/CMakeLists.txt
index 71ab6e26..7c1627bf 100644
--- a/test/core/CMakeLists.txt
+++ b/test/core/CMakeLists.txt
@@ -1,4 +1,5 @@
 glmCreateTestGTC(core_force_pure)
+glmCreateTestGTC(core_force_unrestricted_gentype)
 glmCreateTestGTC(core_type_aligned)
 glmCreateTestGTC(core_type_cast)
 glmCreateTestGTC(core_type_ctor)
diff --git a/test/core/core_force_unrestricted_gentype.cpp b/test/core/core_force_unrestricted_gentype.cpp
new file mode 100644
index 00000000..46a8b1ed
--- /dev/null
+++ b/test/core/core_force_unrestricted_gentype.cpp
@@ -0,0 +1,11 @@
+#define GLM_FORCE_UNRESTRICTED_GENTYPE
+
+#include <glm/glm.hpp>
+
+int main()
+{
+	int Error = 0;
+
+	return Error;
+}
+