diff --git a/GoBot/discord/config/translate.go b/GoBot/discord/config/translate.go
index b08c37b..8394770 100644
--- a/GoBot/discord/config/translate.go
+++ b/GoBot/discord/config/translate.go
@@ -132,6 +132,8 @@ const ChangeTrustSuccessTitle = "成功更新玩家评分 Update Player Score Su
 const ChangeTrustSuccessDescription = "你对这名玩家的分数改变已被记录。\nThe score has been updated."
 const ErrorChangeTrustTitle = "调整信誉分错误 Change Trust Error"
 const ErrorChangeTrustTargetNotFound = "无法寻找到改变目标。\nCannot find the target user."
+const ErrorChangeTrustSelf = "无法改变自己的分数。\nCannot set your own score."
+const ErrorChangeTrustNotMember = "目标用户不是伺服器成员。\nTarget user is not a server member."
 const ErrorChangeTrustRecentlyChanged = "你在一个月内设定过该名玩家的分数。你这次的更动没有被记录。\nYou have already changed your score for this player within the previous month. Your change was not recorded."
 
 const VoteSuggestionUsage = "!votesuggest <种类：custom> <内容>\n!votesuggest <type: custom> <content>"
diff --git a/GoBot/discord/modules/trust.go b/GoBot/discord/modules/trust.go
index 73a5c67..d2d44a1 100644
--- a/GoBot/discord/modules/trust.go
+++ b/GoBot/discord/modules/trust.go
@@ -26,6 +26,28 @@ var changeTrust = enforceDM(memberFilter(true, enforceArgumentCount(
 			return
 		}
 
+		if member.User.ID == m.Author.ID {
+			message.InitNewEmbed(
+				config.ErrorChangeTrustTitle,
+				config.ErrorChangeTrustSelf,
+				config.ErrorColour,
+			).Send(s, m.ChannelID)
+		}
+
+		isMember := false
+		for _, v := range member.Roles {
+			if v == config.MemberRoleID {
+				isMember = true
+			}
+		}
+		if !isMember {
+			message.InitNewEmbed(
+				config.ErrorChangeTrustTitle,
+				config.ErrorChangeTrustNotMember,
+				config.ErrorColour,
+			).Send(s, m.ChannelID)
+		}
+
 		embed := message.NewEmbed().
 			SetTitle(config.ChangeTrustPromptTitle).
 			SetColour(config.ChangeTrustPromptColour).