diff --git a/dlls/mshtml/htmlevent.c b/dlls/mshtml/htmlevent.c
index 93a5367c067..2b9e62e98fb 100644
--- a/dlls/mshtml/htmlevent.c
+++ b/dlls/mshtml/htmlevent.c
@@ -1229,6 +1229,7 @@ HRESULT set_event_handler(event_target_t **event_target, nsIDOMNode *nsnode, HTM
default:
FIXME("not supported vt=%d\n", V_VT(var));
+ /* fall through */
case VT_EMPTY:
return E_NOTIMPL;
}