diff --git a/mkspecs/features/mac/default_post.prf b/mkspecs/features/mac/default_post.prf
index 60b2eb2117b..26bd3e2e98b 100644
--- a/mkspecs/features/mac/default_post.prf
+++ b/mkspecs/features/mac/default_post.prf
@@ -270,7 +270,7 @@ xcode_product_bundle_identifier_setting.value = "$${xcode_product_bundle_identif
 QMAKE_MAC_XCODE_SETTINGS += xcode_product_bundle_identifier_setting
 
 !macx-xcode {
-    generate_xcode_project.commands = @$(QMAKE) -spec macx-xcode $(EXPORT__PRO_FILE_) $$QMAKE_ARGS
+    generate_xcode_project.commands = @$(QMAKE) -spec macx-xcode \"$(EXPORT__PRO_FILE_)\" $$QMAKE_ARGS
     generate_xcode_project.target = xcodeproj
     QMAKE_EXTRA_VARIABLES += _PRO_FILE_
     QMAKE_EXTRA_TARGETS += generate_xcode_project