diff --git a/dlls/scrobj/scrobj.c b/dlls/scrobj/scrobj.c
index 9596c6b5516..29116e29b17 100644
--- a/dlls/scrobj/scrobj.c
+++ b/dlls/scrobj/scrobj.c
@@ -1013,7 +1013,7 @@ static HRESULT create_scriptlet_instance(struct scriptlet_factory *factory, IDis
     struct scriptlet_instance *obj;
     HRESULT hres;
 
-    if (!(obj = heap_alloc(sizeof(*obj)))) return E_OUTOFMEMORY;
+    if (!(obj = heap_alloc_zero(sizeof(*obj)))) return E_OUTOFMEMORY;
 
     obj->IDispatchEx_iface.lpVtbl = &DispatchExVtbl;
     obj->ref = 1;