diff --git a/action.yaml b/action.yaml
index 600de8b..ac6fc45 100644
--- a/action.yaml
+++ b/action.yaml
@@ -36,14 +36,18 @@ runs:
         fi        
         
         case "$COMMAND" in 
-            start | log | fail)
+            start|log|fail)
                 URL="${HEALTHPOINT}/$COMMAND"
                 ;;
 
             stop)
                 URL="${HEALTHPOINT}"
                 ;;
-        esac
+            *)
+              echo "::error::Commande invalide: $COMMAND"
+              exit 1
+              ;;
+       esac
 
         curl_cmd=(
             curl