diff --git a/src/message-stream.ts b/src/message-stream.ts
index 7ea275ee..80b71449 100644
--- a/src/message-stream.ts
+++ b/src/message-stream.ts
@@ -323,8 +323,13 @@ export class MessageStream extends PassThrough {
         ? 0
         : this._subscriber.maxBytes,
     };
+    const otherArgs = {
+      headers: {
+        'x-goog-request-params': 'subscription=' + this._subscriber.name,
+      },
+    };
 
-    const stream: PullStream = client.streamingPull({deadline});
+    const stream: PullStream = client.streamingPull({deadline, otherArgs});
     this._replaceStream(index, stream);
     stream.write(request);
   }