diff --git a/pkg/middleware/request_tracing.go b/pkg/middleware/request_tracing.go
index bf25308a2a3..c35c2a00734 100644
--- a/pkg/middleware/request_tracing.go
+++ b/pkg/middleware/request_tracing.go
@@ -29,5 +29,8 @@ func RequestTracing(handler string) macaron.Handler {
 		ext.HTTPStatusCode.Set(span, uint16(status))
 		ext.HTTPUrl.Set(span, req.RequestURI)
 		ext.HTTPMethod.Set(span, req.Method)
+		if status >= 400 {
+			ext.Error.Set(span, true)
+		}
 	}
 }