diff --git a/controller/relay-openai.go b/controller/relay-openai.go
index 2bcb99dc..b986822c 100644
--- a/controller/relay-openai.go
+++ b/controller/relay-openai.go
@@ -34,6 +34,9 @@ func openaiStreamHandler(c *gin.Context, resp *http.Response, relayMode int) (*O
 			if len(data) < 6 { // ignore blank line or wrong format
 				continue
 			}
+			if data[:6] != "data: " && data[:6] != "[DONE]" {
+				continue
+			}
 			dataChan <- data
 			data = data[6:]
 			if !strings.HasPrefix(data, "[DONE]") {