diff --git a/alexa-volume.sh b/alexa-volume.sh
index 4ac134c..43269fa 100644
--- a/alexa-volume.sh
+++ b/alexa-volume.sh
@@ -9,7 +9,7 @@ VOLUME=$1
 #check if parameter is set
 if [ -z "$VOLUME" ];
 then
-    echo "use ./alexa-volume.sh 40"
+    echo "use ./alexa-volume.sh 40 # Use something between 0-100"
     exit
 fi