diff --git a/include/zmq.h b/include/zmq.h
index ddc851469b..716060fa39 100644
--- a/include/zmq.h
+++ b/include/zmq.h
@@ -243,14 +243,14 @@ ZMQ_EXPORT int zmq_ctx_destroy (void *context);
  * zmq_msg_t on addresses aligned on a pointer-size boundary to avoid this issue.
  */
 typedef struct zmq_msg_t {
-#if defined (__GNUC__) || defined ( __INTEL_COMPILER) || \
-        (defined (__SUNPRO_C) && __SUNPRO_C >= 0x590) || \
-        (defined (__SUNPRO_CC) && __SUNPRO_CC >= 0x590)
-    unsigned char _ [64] __attribute__ ((aligned (sizeof (void *))));
-#elif defined (_MSC_VER) && (defined (_M_X64) || defined (_M_ARM64))
+#if defined (_MSC_VER) && (defined (_M_X64) || defined (_M_ARM64))
     __declspec (align (8)) unsigned char _ [64];
 #elif defined (_MSC_VER) && (defined (_M_IX86) || defined (_M_ARM_ARMV7VE))
     __declspec (align (4)) unsigned char _ [64];
+#elif defined (__GNUC__) || defined ( __INTEL_COMPILER) || \
+        (defined (__SUNPRO_C) && __SUNPRO_C >= 0x590) || \
+        (defined (__SUNPRO_CC) && __SUNPRO_CC >= 0x590)
+    unsigned char _ [64] __attribute__ ((aligned (sizeof (void *))));
 #else
     unsigned char _ [64];
 #endif