diff --git a/src/SkyApm.Transport.Grpc/V8/LogReporter.cs b/src/SkyApm.Transport.Grpc/V8/LogReporter.cs
index 2ee058ba..89ab7605 100644
--- a/src/SkyApm.Transport.Grpc/V8/LogReporter.cs
+++ b/src/SkyApm.Transport.Grpc/V8/LogReporter.cs
@@ -69,7 +69,7 @@ public async Task ReportAsync(IReadOnlyCollection<LogRequest> logRequests,
                             Timestamp = logRequest.Date,
                             Service = _instrumentConfig.ServiceName,
                             ServiceInstance = _instrumentConfig.ServiceInstanceName,
-                            Endpoint = logRequest.Endpoint,
+                            Endpoint = logRequest.Endpoint ?? string.Empty,
                             Body = new LogDataBody()
                             {
                                 Type = "text",