diff --git a/src/backend/executor/execParallel.c b/src/backend/executor/execParallel.c
index c713b85..3234900 100644
--- a/src/backend/executor/execParallel.c
+++ b/src/backend/executor/execParallel.c
@@ -753,11 +753,16 @@ ExecParallelFinish(ParallelExecutorInfo *pei)
 	for (i = 0; i < pei->pcxt->nworkers_launched; ++i)
 		InstrAccumParallelQuery(&pei->buffer_usage[i]);
 
-	/* Finally, accumulate instrumentation, if any. */
+	/* Accumulate instrumentation, if any. */
 	if (pei->instrumentation)
 		ExecParallelRetrieveInstrumentation(pei->planstate,
 											pei->instrumentation);
 
+	/* Clean up assorted storage. */
+	if (pei->tqueue)
+		pfree(pei->tqueue);
+	pei->tqueue = NULL;
+
 	pei->finished = true;
 }