diff --git a/src/export/ExportMP3.h b/src/export/ExportMP3.h
index 11528fe83..8594fe0f8 100644
--- a/src/export/ExportMP3.h
+++ b/src/export/ExportMP3.h
@@ -25,7 +25,7 @@ enum MP3RateMode : unsigned {
 template< typename Enum > class EnumSetting;
 extern EnumSetting< MP3RateMode > MP3RateModeSetting;
 
-#if defined(__WXMSW__) || defined(__WXMAC__)
+#if defined(__WXMSW__)
 #define MP3_EXPORT_BUILT_IN 1
 #endif