--- a/js/src/vm/HelperThreads.cpp
+++ b/js/src/vm/HelperThreads.cpp
@@ -1494,17 +1494,16 @@ HelperThread::handleGCParallelWorkload(A
     MOZ_ASSERT(idle());
 
     TraceLoggerThread* logger = TraceLoggerForCurrentThread();
     AutoTraceLog logCompile(logger, TraceLogger_GC);
 
     currentTask.emplace(HelperThreadState().gcParallelWorklist(locked).popCopy());
     gcParallelTask()->runFromHelperThread(locked);
     currentTask.reset();
-    HelperThreadState().notifyAll(GlobalHelperThreadState::CONSUMER, locked);
 }
 
 static void
 LeaveParseTaskZone(JSRuntime* rt, ParseTask* task)
 {
     // Mark the zone as no longer in use by a helper thread, and available
     // to be collected by the GC.
     rt->clearUsedByHelperThread(task->parseGlobal->zoneFromAnyThread());