diff --git a/.forgejo/workflows/demo.yaml b/.forgejo/workflows/demo.yaml
index 8938b06..d70df26 100644
--- a/.forgejo/workflows/demo.yaml
+++ b/.forgejo/workflows/demo.yaml
@@ -15,5 +15,5 @@ jobs:
         run: echo works
       -
         name: test inverse
-        if: !contains(github.ref_name, 'a')
+        if: (! contains(github.ref_name, 'a'))
         run: echo works as well
\ No newline at end of file