diff --git a/build/tools/wxwidgets.iss b/build/tools/wxwidgets.iss
index b50fb867b6..c2e5c52605 100644
--- a/build/tools/wxwidgets.iss
+++ b/build/tools/wxwidgets.iss
@@ -44,7 +44,7 @@ SolidCompression=yes
 
 [Files]
 ; source files
-Source: "{#WXW_DIR}\*"; DestDir: "{app}"; Excludes: ".cvsignore,cocoa,dfb,mac,gtk,gtk1,motif,msdos,os2,wxWindows.xcod*,x11,debian,distrib,misc,tests,wxPython,*.pch,*.pch++,*.pchmm"; Flags: ignoreversion recursesubdirs createallsubdirs
+Source: "{#WXW_DIR}\*"; DestDir: "{app}"; Excludes: ".cvsignore,cocoa,dfb,gtk,gtk1,motif,msdos,os2,osx,wxWindows.xcod*,x11,debian,distrib,misc,tests,wxPython,*.pch,*.pch++,*.pchmm"; Flags: ignoreversion recursesubdirs createallsubdirs
 
 [INI]
 Filename: "{app}\wx.url"; Section: "InternetShortcut"; Key: "URL"; String: "http://www.wxwidgets.org"