diff --git a/.github/workflows/check_cla.yml b/.github/workflows/check_cla.yml
index e4e07b0..248385b 100644
--- a/.github/workflows/check_cla.yml
+++ b/.github/workflows/check_cla.yml
@@ -31,7 +31,7 @@ jobs:
           else 
             is_external="false"
           fi
-          echo 'is_external='$is_external >> $GITHUB_OUTPUT
+          echo 'is_external=${is_external}' >> $GITHUB_OUTPUT
 
   check-external-contributions:
     name: Check External Contributions