diff --git a/atom b/atom
index 8e70de2..63d19b2 100755
--- a/atom
+++ b/atom
@@ -323,7 +323,7 @@ Update(){
 	do
 		case $what in
 			key)
-				set_statement="${set_statement:+${set_statement+,}}\`$argument\`"
+				set_statement="${set_statement:+${set_statement},}\`$argument\`"
 				what=value
 			;;
 			value)