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 71e214b8e..0e5340899 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
@@ -82,7 +82,7 @@ type KeyValue {
 }
 
 type LogEntity {
-  time: String
+  time: Long!
   data: [KeyValue!]
 }