diff --git a/apps/emqx_bridge_azure_event_hub/src/emqx_bridge_azure_event_hub.erl b/apps/emqx_bridge_azure_event_hub/src/emqx_bridge_azure_event_hub.erl
index 20cde55a6..4ffa79ed5 100644
--- a/apps/emqx_bridge_azure_event_hub/src/emqx_bridge_azure_event_hub.erl
+++ b/apps/emqx_bridge_azure_event_hub/src/emqx_bridge_azure_event_hub.erl
@@ -270,8 +270,7 @@ values(producer) ->
             topic => <<"topic">>,
             message => #{
                 key => <<"${.clientid}">>,
-                value => <<"${.}">>,
-                timestamp => <<"${.timestamp}">>
+                value => <<"${.}">>
             },
             max_batch_bytes => <<"896KB">>,
             partition_strategy => <<"random">>,