diff --git a/src/ray/core_worker/test/task_manager_test.cc b/src/ray/core_worker/test/task_manager_test.cc
index d1fd1928d..1acaa2dd1 100644
--- a/src/ray/core_worker/test/task_manager_test.cc
+++ b/src/ray/core_worker/test/task_manager_test.cc
@@ -25,7 +25,6 @@ class MockActorManager : public ActorManagerInterface {
     num_terminations += 1;
   }
 
-  int num_publishes = 0;
   int num_terminations = 0;
 };