diff --git a/relay/relay-audio.go b/relay/relay-audio.go
index b2fadcc..437c1dd 100644
--- a/relay/relay-audio.go
+++ b/relay/relay-audio.go
@@ -75,7 +75,7 @@ func AudioHelper(c *gin.Context) *dto.OpenAIErrorWithStatusCode {
 		return service.OpenAIErrorWrapperLocal(err, "get_user_quota_failed", http.StatusInternalServerError)
 	}
 	if userQuota-preConsumedQuota < 0 {
-		return service.OpenAIErrorWrapperLocal(errors.New("user quota is not enough"), "insufficient_user_quota", http.StatusForbidden)
+		return service.OpenAIErrorWrapperLocal(errors.New("pre-consumed quota is more than user quota"), "insufficient_user_quota", http.StatusForbidden)
 	}
 	err = model.CacheDecreaseUserQuota(relayInfo.UserId, preConsumedQuota)
 	if err != nil {
diff --git a/relay/relay-image.go b/relay/relay-image.go
index 83c7538..430d28f 100644
--- a/relay/relay-image.go
+++ b/relay/relay-image.go
@@ -125,7 +125,7 @@ func ImageHelper(c *gin.Context, relayMode int) *dto.OpenAIErrorWithStatusCode {
 	quota := int(imageRatio * groupRatio * common.QuotaPerUnit)
 
 	if userQuota-quota < 0 {
-		return service.OpenAIErrorWrapperLocal(errors.New("user quota is not enough"), "insufficient_user_quota", http.StatusForbidden)
+		return service.OpenAIErrorWrapperLocal(errors.New("pre-consumed quota is more than user quota"), "insufficient_user_quota", http.StatusForbidden)
 	}
 
 	adaptor := GetAdaptor(relayInfo.ApiType)
diff --git a/relay/relay-text.go b/relay/relay-text.go
index e7c5388..a6a7b94 100644
--- a/relay/relay-text.go
+++ b/relay/relay-text.go
@@ -238,9 +238,12 @@ func preConsumeQuota(c *gin.Context, preConsumedQuota int, relayInfo *relaycommo
 	if err != nil {
 		return 0, 0, service.OpenAIErrorWrapperLocal(err, "get_user_quota_failed", http.StatusInternalServerError)
 	}
-	if userQuota <= 0 || userQuota-preConsumedQuota < 0 {
+	if userQuota <= 0 {
 		return 0, 0, service.OpenAIErrorWrapperLocal(errors.New("user quota is not enough"), "insufficient_user_quota", http.StatusForbidden)
 	}
+	if userQuota-preConsumedQuota < 0 {
+		return 0, 0, service.OpenAIErrorWrapperLocal(errors.New("pre-consumed quota is more than user quota"), "insufficient_user_quota", http.StatusForbidden)
+	}
 	err = model.CacheDecreaseUserQuota(relayInfo.UserId, preConsumedQuota)
 	if err != nil {
 		return 0, 0, service.OpenAIErrorWrapperLocal(err, "decrease_user_quota_failed", http.StatusInternalServerError)