diff --git a/common/jack/weakmacros.h b/common/jack/weakmacros.h
index a65d1544..d5818b34 100644
--- a/common/jack/weakmacros.h
+++ b/common/jack/weakmacros.h
@@ -42,7 +42,12 @@
 */
 #define JACK_WEAK_EXPORT __attribute__((weak))
 #else
-/* Add other things here for non-gcc platforms */
+/* Add other things here for non-gcc platforms */
+
+#ifdef WIN32
+#define JACK_WEAK_EXPORT
+#endif
+
 #endif
 #endif
 
@@ -54,7 +59,12 @@
 #ifdef __GNUC__
 #define JACK_OPTIONAL_WEAK_DEPRECATED_EXPORT __attribute__((__deprecated__))
 #else
-/* Add other things here for non-gcc platforms */
+/* Add other things here for non-gcc platforms */
+
+#ifdef WIN32
+#define JACK_OPTIONAL_WEAK_DEPRECATED_EXPORT
+#endif
+
 #endif /* __GNUC__ */
 #endif