diff --git a/shortcuts/shortcuts.sty b/shortcuts/shortcuts.sty
index 25abdcf..e894099 100644
--- a/shortcuts/shortcuts.sty
+++ b/shortcuts/shortcuts.sty
@@ -284,7 +284,7 @@
 
 %% math letter used as curve name
 %%
-\NewDocumentCommand \mscr{ g } {
+\NewDocumentCommand \mscr{ G{f} } {
     $ \mathscr{#1} $
 }