diff --git a/src/backend/utils/activity/pgstat_backend.c b/src/backend/utils/activity/pgstat_backend.c
index 1350f5f62f15..f2f8d3ff75f5 100644
--- a/src/backend/utils/activity/pgstat_backend.c
+++ b/src/backend/utils/activity/pgstat_backend.c
@@ -326,7 +326,7 @@ pgstat_create_backend(ProcNumber procnum)
 	PgStatShared_Backend *shstatent;
 
 	entry_ref = pgstat_get_entry_ref_locked(PGSTAT_KIND_BACKEND, InvalidOid,
-											MyProcNumber, false);
+											procnum, false);
 	shstatent = (PgStatShared_Backend *) entry_ref->shared_stats;
 
 	/*