Fixed PHP interop tests
diff --git a/src/php/tests/interop/interop_client.php b/src/php/tests/interop/interop_client.php
index 43da47f..c837506 100755
--- a/src/php/tests/interop/interop_client.php
+++ b/src/php/tests/interop/interop_client.php
@@ -25,7 +25,7 @@
* @param $stub Stub object that has service methods
*/
function emptyUnary($stub) {
- list($result, $status) = $stub->EmptyCall(new proto2\EmptyMessage())->wait();
+ list($result, $status) = $stub->EmptyCall(new grpc\testing\EmptyMessage())->wait();
hardAssert($status->code == Grpc\STATUS_OK, 'Call did not complete successfully');
hardAssert($result != null, 'Call completed with a null response');
}