diff --git a/module/message-command/line-group.go b/module/message-command/line-group.go
index 4ab5ab2..7b723bb 100644
--- a/module/message-command/line-group.go
+++ b/module/message-command/line-group.go
@@ -349,9 +349,7 @@ func lottery(sub, txt string, s *lineobj.SourceObject) (res string) {
 	perm := rand.Perm(len(arr))
 	for idx, val := range perm {
 		dest[val] = arr[idx]
-		arr[idx] = nil
 	}
-	arr = nil
 
 	data := dest[0]