diff --git a/include/dmusici.h b/include/dmusici.h
index c6e685213ef..2eb6daa0fb1 100644
--- a/include/dmusici.h
+++ b/include/dmusici.h
@@ -34,6 +34,10 @@
 #include <dmplugin.h>
 #include <pshpack8.h>
 
+#ifdef WINE_NO_UNICODE_MACROS
+#undef AddPort
+#endif
+
 #ifdef __cplusplus
 extern "C" {
 #endif