diff --git a/src/node/interop/interop_client.js b/src/node/interop/interop_client.js
index 2839c441fc514c192f1404179db74c36058f1293..551e39a116fa15cf4efda99bbccb49f1eca2986e 100644
--- a/src/node/interop/interop_client.js
+++ b/src/node/interop/interop_client.js
@@ -268,7 +268,6 @@ function timeoutOnSleepingServer(client, done) {
   deadline.setMilliseconds(deadline.getMilliseconds() + 1);
   var call = client.fullDuplexCall(null, deadline);
   call.write({
-    response_type: 'COMPRESSABLE',
     payload: {body: zeroBuffer(27182)}
   });
   call.on('error', function(error) {