diff --git a/src/gc.c b/src/gc.c
index 7a4be83ca6ada..719b046b08fed 100644
--- a/src/gc.c
+++ b/src/gc.c
@@ -447,8 +447,13 @@ static void run_finalizers(jl_task_t *ct)
 
 JL_DLLEXPORT void jl_gc_run_pending_finalizers(jl_task_t *ct)
 {
+
     if (ct == NULL)
         ct = jl_current_task;
+#ifdef MMTKHEAP
+    mmtk_jl_run_pending_finalizers(ct->ptls);
+    return;
+#endif
     jl_ptls_t ptls = ct->ptls;
     if (!ptls->in_finalizer && ptls->locks.len == 0 && ptls->finalizers_inhibited == 0) {
         ptls->in_finalizer = 1;