diff --git a/.github/labeler.yml b/.github/labeler.yml
index 4e61cd3..726a93e 100644
--- a/.github/labeler.yml
+++ b/.github/labeler.yml
@@ -1,5 +1,5 @@
 "Type: Proof":
-  - **/!(MAIN).agc
+  - "**/!(MAIN).agc"
 "Type: Meta":
   - "**/MAIN.agc"
   - "**/*.md"