diff --git a/src/backend/executor/execParallel.c b/src/backend/executor/execParallel.c
index 52f1a96db5f..ee0f07a81e9 100644
--- a/src/backend/executor/execParallel.c
+++ b/src/backend/executor/execParallel.c
@@ -1281,9 +1281,6 @@ ParallelQueryMain(dsm_segment *seg, shm_toc *toc)
 	/* Report workers' query for monitoring purposes */
 	pgstat_report_activity(STATE_RUNNING, debug_query_string);
 
-	/* Prepare to track buffer usage during query execution. */
-	InstrStartParallelQuery();
-
 	/* Attach to the dynamic shared memory area. */
 	area_space = shm_toc_lookup(toc, PARALLEL_KEY_DSA, false);
 	area = dsa_attach_in_place(area_space, seg);
@@ -1309,6 +1306,15 @@ ParallelQueryMain(dsm_segment *seg, shm_toc *toc)
 	/* Pass down any tuple bound */
 	ExecSetTupleBound(fpes->tuples_needed, queryDesc->planstate);
 
+	/*
+	 * Prepare to track buffer usage during query execution.
+	 *
+	 * We do this after starting up the executor to match what happens in the
+	 * leader, which also doesn't count buffer accesses that occur during
+	 * executor startup.
+	 */
+	InstrStartParallelQuery();
+
 	/*
 	 * Run the plan.  If we specified a tuple bound, be careful not to demand
 	 * more tuples than that.