diff --git a/models/command.go b/models/command.go
index 6f2f35b..a7fde93 100644
--- a/models/command.go
+++ b/models/command.go
@@ -316,7 +316,7 @@ var codeSignals = []CodeSignal{
 		Admin:   true,
 		Handle: func(sender *Sender) interface{} {
 			ctt := sender.JoinContens()
-			db.Delete(&UserAdmin{Content: ctt})
+			db.Delete(&UserAdmin{}).Where(Content+" = ?", ctt)
 			return "已取消管理员"
 		},
 	},