diff --git a/lang/remove_message.sh b/lang/remove_message.sh
index 0618b4663..293270960 100755
--- a/lang/remove_message.sh
+++ b/lang/remove_message.sh
@@ -6,6 +6,12 @@
 #
 # Example:  remove_message.sh 'strMessageToRemove' 
 #
+
+if [ $# -ne 1 ] ; then
+    echo "usage: remove_message.sh 'strMessageToRemove'"
+    exit 1
+fi
+    
 for file in *.inc.php3
 do
     echo "lines before:" `wc -l $file`