diff --git a/run.sh b/run.sh
index d9ec32a..bfb06e0 100755
--- a/run.sh
+++ b/run.sh
@@ -33,6 +33,10 @@ while [[ $# -gt 0 ]]; do
             EXPOSED_PORTS=("-p" "10000:10000" "-p" "10001:10001" "-p" "10002:10002")
             shift
             ;;
+        *)
+            echo "Unknown argument: $1" >&2
+            exit 1
+            ;;
     esac
 done