diff --git a/dracut.sh b/dracut.sh
index c26e0f87..309fd7d4 100755
--- a/dracut.sh
+++ b/dracut.sh
@@ -289,6 +289,7 @@ while (($# > 0)); do
             elif ! [[ ${kernel+x} ]]; then
                 kernel=$1
             else
+                echo "Unknown argument: $1"
                 usage; exit 1;
             fi
             ;;