diff --git a/core/lib/macros-quickrun.el b/core/lib/macros-quickrun.el
index 7bddce503..242719e04 100644
--- a/core/lib/macros-quickrun.el
+++ b/core/lib/macros-quickrun.el
@@ -1,7 +1,7 @@
 ;;; macros-quickrun.el
 
 ;;;###autoload
-(defmacro build-for! (mode command build-file)
+(defmacro build-for! (mode command &optional build-file)
   "Register major/minor MODE with build COMMAND. If FILES are provided, do an
 additional check to make sure they exist in the project root."
   `(add-hook! ,mode