diff --git a/kernel-nanoBench.sh b/kernel-nanoBench.sh
index 5b99451..106b049 100755
--- a/kernel-nanoBench.sh
+++ b/kernel-nanoBench.sh
@@ -73,7 +73,8 @@ while [ "$1" ]; do
         shift
     else
         echo "Invalid option: " "$1"
+        exit 1
     fi
 done
 
-cat /sys/nb/run
\ No newline at end of file
+cat /sys/nb/run