diff --git a/bin/vmail-mboxes-mod.sh b/bin/vmail-mboxes-mod.sh
index eba6e4a..6ea54c1 100755
--- a/bin/vmail-mboxes-mod.sh
+++ b/bin/vmail-mboxes-mod.sh
@@ -65,7 +65,7 @@ if [[ -n $ratelimit ]]; then
     if [[ ! -z $dbset ]]; then
       dbset="$dbset,"
     fi
-    dbset=" ratelimit=$ratelimit"
+    dbset="$dbset ratelimit=$ratelimit"
   else
     echo "ERROR: ratelimit (-r) must numeric or NULL"
     exit 1