diff --git a/include/cglm-common.h b/include/cglm-common.h
index abcf5da..3ba492f 100644
--- a/include/cglm-common.h
+++ b/include/cglm-common.h
@@ -12,8 +12,10 @@
 
 #if defined(_WIN32)
 #  define CGLM_INLINE __forceinline
+#  define CGLM_ALIGN(X) __declspec(align(X))
 #else
 #  define CGLM_INLINE static inline __attribute((always_inline))
+#  define CGLM_ALIGN(X) __attribute((aligned(X)))
 #endif
 
 #define glm__memcpy(type, dest, src, size)                                    \
diff --git a/include/cglm.h b/include/cglm.h
index a7ddf41..f66c4ff 100644
--- a/include/cglm.h
+++ b/include/cglm.h
@@ -11,7 +11,7 @@
 #include "cglm-common.h"
 
 typedef float vec3[3];
-typedef float vec4[4];
+typedef CGLM_ALIGN(16) float vec4[4];
 
 typedef vec3 mat3[3];
 typedef vec4 mat4[4];