diff --git a/glm/detail/intrinsic_geometric.inl b/glm/detail/intrinsic_geometric.inl
index f46f140b..ad33571c 100644
--- a/glm/detail/intrinsic_geometric.inl
+++ b/glm/detail/intrinsic_geometric.inl
@@ -48,7 +48,7 @@ GLM_FUNC_QUALIFIER __m128 sse_dst_ps(__m128 p0, __m128 p1)
 //dot
 GLM_FUNC_QUALIFIER __m128 sse_dot_ps(__m128 v1, __m128 v2)
 {
-#   if((GLM_ARCH & GLM_ARCH_SSE4) == GLM_ARCH_SSE4)
+#   if((GLM_ARCH & GLM_ARCH_AVX) == GLM_ARCH_AVX)
         return _mm_dp_ps(v1, v2, 0xff);
 #   else
         __m128 mul0 = _mm_mul_ps(v1, v2);
diff --git a/glm/detail/setup.hpp b/glm/detail/setup.hpp
index dfe71a8d..958a323c 100644
--- a/glm/detail/setup.hpp
+++ b/glm/detail/setup.hpp
@@ -38,7 +38,7 @@
 #define GLM_VERSION_MAJOR			0
 #define GLM_VERSION_MINOR			9
 #define GLM_VERSION_PATCH			5
-#define GLM_VERSION_REVISION		2
+#define GLM_VERSION_REVISION		3
 
 ///////////////////////////////////////////////////////////////////////////////////////////////////
 // Platform
@@ -550,9 +550,8 @@
 #define GLM_ARCH_PURE		0x0000
 #define GLM_ARCH_SSE2		0x0001
 #define GLM_ARCH_SSE3		0x0002// | GLM_ARCH_SSE2
-#define GLM_ARCH_SSE4		0x0004// | GLM_ARCH_SSE3 | GLM_ARCH_SSE2
-#define GLM_ARCH_AVX		0x0008// | GLM_ARCH_SSE4 | GLM_ARCH_SSE3 | GLM_ARCH_SSE2
-#define GLM_ARCH_AVX2		0x0010// | GLM_ARCH_AVX | GLM_ARCH_SSE4 | GLM_ARCH_SSE3 | GLM_ARCH_SSE2
+#define GLM_ARCH_AVX		0x0008// | GLM_ARCH_SSE3 | GLM_ARCH_SSE2
+#define GLM_ARCH_AVX2		0x0010// | GLM_ARCH_AVX | GLM_ARCH_SSE3 | GLM_ARCH_SSE2
 
 #if(defined(GLM_FORCE_PURE))
 #	define GLM_ARCH GLM_ARCH_PURE
@@ -560,8 +559,6 @@
 #	define GLM_ARCH (GLM_ARCH_AVX2 | GLM_ARCH_AVX | GLM_ARCH_SSE3 | GLM_ARCH_SSE2)
 #elif(defined(GLM_FORCE_AVX))
 #	define GLM_ARCH (GLM_ARCH_AVX | GLM_ARCH_SSE3 | GLM_ARCH_SSE2)
-#elif(defined(GLM_FORCE_SSE4))
-#	define GLM_ARCH (GLM_ARCH_SSE4 | GLM_ARCH_SSE3 | GLM_ARCH_SSE2)
 #elif(defined(GLM_FORCE_SSE3))
 #	define GLM_ARCH (GLM_ARCH_SSE3 | GLM_ARCH_SSE2)
 #elif(defined(GLM_FORCE_SSE2))
@@ -572,17 +569,22 @@
 #	elif _M_IX86_FP == 2
 #		define GLM_ARCH (GLM_ARCH_SSE2)
 #	else
-#		define GLM_ARCH GLM_ARCH_PURE
+#		define GLM_ARCH (GLM_ARCH_PURE)
 #	endif
 #elif((GLM_PLATFORM & GLM_PLATFORM_APPLE) && (GLM_COMPILER & GLM_COMPILER_GCC))
 #	define GLM_ARCH GLM_ARCH_PURE
 #elif(((GLM_COMPILER & GLM_COMPILER_GCC) && (defined(__i386__) || defined(__x86_64__))) || (GLM_COMPILER & GLM_COMPILER_LLVM_GCC))
-#	define GLM_ARCH (GLM_ARCH_PURE \
-| (defined(__AVX2__) ? GLM_ARCH_AVX2 : 0) \
-| (defined(__AVX__) ? GLM_ARCH_AVX : 0) \
-| (defined(__SSE4__) ? GLM_ARCH_SSE4 : 0) \
-| (defined(__SSE3__) ? GLM_ARCH_SSE3 : 0) \
-| (defined(__SSE2__) ? GLM_ARCH_SSE2 : 0))
+#	if defined(__AVX2__) 
+#		define GLM_ARCH (GLM_ARCH_AVX2 | GLM_ARCH_AVX | GLM_ARCH_SSE3 | GLM_ARCH_SSE2)
+#	elif defined(__AVX__)
+#		define GLM_ARCH (GLM_ARCH_AVX | GLM_ARCH_SSE3 | GLM_ARCH_SSE2)
+#	elif defined(__SSE3__)
+#		define GLM_ARCH (GLM_ARCH_SSE3 | GLM_ARCH_SSE2)
+#	elif defined(__SSE2__)
+#		define GLM_ARCH (GLM_ARCH_SSE2)
+#	else
+#		define GLM_ARCH (GLM_ARCH_PURE)
+#	endif
 #else
 #	define GLM_ARCH GLM_ARCH_PURE
 #endif
diff --git a/readme.txt b/readme.txt
index 432aa173..3dfa4ff4 100644
--- a/readme.txt
+++ b/readme.txt
@@ -42,6 +42,7 @@ GLM 0.9.5.3: 2014-0X-XX
 - Added instruction set auto detection with Visual C++ using _M_IX86_FP - /arch
   compiler argument.
 - Fixed GTX_raw_data code dependency
+- Fixed GCC instruction set detection.
 
 ================================================================================
 GLM 0.9.5.2: 2014-02-08