diff --git a/relay/channel/zhipu/adaptor.go b/relay/channel/zhipu/adaptor.go
index d437f1b..6f2d186 100644
--- a/relay/channel/zhipu/adaptor.go
+++ b/relay/channel/zhipu/adaptor.go
@@ -36,6 +36,9 @@ func (a *Adaptor) ConvertRequest(c *gin.Context, relayMode int, request *dto.Gen
 	if request == nil {
 		return nil, errors.New("request is nil")
 	}
+	if request.TopP >= 1 {
+		request.TopP = 0.99
+	}
 	return requestOpenAI2Zhipu(*request), nil
 }
 
diff --git a/relay/channel/zhipu_4v/adaptor.go b/relay/channel/zhipu_4v/adaptor.go
index 546b048..9007e33 100644
--- a/relay/channel/zhipu_4v/adaptor.go
+++ b/relay/channel/zhipu_4v/adaptor.go
@@ -34,6 +34,9 @@ func (a *Adaptor) ConvertRequest(c *gin.Context, relayMode int, request *dto.Gen
 	if request == nil {
 		return nil, errors.New("request is nil")
 	}
+	if request.TopP >= 1 {
+		request.TopP = 0.99
+	}
 	return requestOpenAI2Zhipu(*request), nil
 }