diff --git a/browser/app/Makefile.in b/browser/app/Makefile.in
index e649554f8fd..d4577ddd195 100644
--- a/browser/app/Makefile.in
+++ b/browser/app/Makefile.in
@@ -249,7 +249,7 @@ libs:: $(PROGRAM)
 	rsync -a $(DIST)/bin/ $(DIST)/$(APP_NAME).app/Contents/MacOS
 	rm -f $(DIST)/$(APP_NAME).app/Contents/MacOS/$(PROGRAM)
 	rsync -aL $(PROGRAM) $(DIST)/$(APP_NAME).app/Contents/MacOS
-	cp -RL $(srcdir)/macbuild/mach.icns $(DIST)/$(APP_NAME).app/Contents/Resources/mach.icns
+	cp -RL $(srcdir)/macbuild/firefox.icns $(DIST)/$(APP_NAME).app/Contents/Resources/firefox.icns
 	echo -n APPLMOZB > $(DIST)/$(APP_NAME).app/Contents/PkgInfo
 #       remove CVS dirs from packaged app
 	find $(DIST)/$(APP_NAME).app -type d -name "CVS" -prune -exec rm -rf {} \;