diff --git a/stc/tests/493-bag.swift b/stc/tests/493-bag.swift
index 469df04de..a59d6d140 100644
--- a/stc/tests/493-bag.swift
+++ b/stc/tests/493-bag.swift
@@ -1,3 +1,9 @@
+
+/*
+  SKIP-O2-TEST issue #191
+  SKIP-O3-TEST issue #191
+*/
+
 import random;
 import assert;