--- a/src/backend/utils/adt/pgstatfuncs.c
+++ b/src/backend/utils/adt/pgstatfuncs.c
@@ -737,3 +737,4 @@ pg_stat_get_activity(PG_FUNCTION_ARGS)
                                leader = proc->lockGroupLeader;
-                               if (leader)
+                               if (leader && leader->pid != beentry->st_procpid)
                                {