diff --git a/apm-protocol/apm-ui-protocol/src/main/resources/ui-graphql/trace.graphqls b/apm-protocol/apm-ui-protocol/src/main/resources/ui-graphql/trace.graphqls
index d5e2de8f3..decd531af 100644
--- a/apm-protocol/apm-ui-protocol/src/main/resources/ui-graphql/trace.graphqls
+++ b/apm-protocol/apm-ui-protocol/src/main/resources/ui-graphql/trace.graphqls
@@ -81,7 +81,7 @@ type KeyValue {
 }
 
 type LogEntity {
-  time: String
+  time: Long!
   data: [KeyValue!]
 }