diff --git a/stb_image.h b/stb_image.h
index adc779c05c56d33d628003b64423740cbaa4ae3d..18310280c0c0780023984ab8bbc702c046e30bb6 100644
--- a/stb_image.h
+++ b/stb_image.h
@@ -414,11 +414,6 @@ static int stbi__sse2_available()
 
 #else // assume GCC-style if not VC++
 #define STBI_SIMD_ALIGN(type, name) type name __attribute__((aligned(16)))
-#endif
-#endif
-
-#ifndef STBI_SIMD_ALIGN
-#define STBI_SIMD_ALIGN(type, name) type name
 
 static int stbi__sse2_available()
 {
@@ -432,6 +427,11 @@ static int stbi__sse2_available()
 #endif
 }
 #endif
+#endif
+
+#ifndef STBI_SIMD_ALIGN
+#define STBI_SIMD_ALIGN(type, name) type name
+#endif
 
 ///////////////////////////////////////////////
 //