diff --git a/src/util/macros.h b/src/util/macros.h
index d79848ad997..c474d7571d7 100644
--- a/src/util/macros.h
+++ b/src/util/macros.h
@@ -204,7 +204,11 @@ do {                       \
  * packed, to trade off performance for space.
  */
 #ifdef HAVE_FUNC_ATTRIBUTE_PACKED
-#define PACKED __attribute__((__packed__))
+#  if defined(__MINGW32__) || defined(__MINGW64__)
+#    define PACKED __attribute__((gcc_struct,__packed__))
+#  else
+#    define PACKED __attribute__((__packed__))
+#  endif
 #else
 #define PACKED
 #endif