diff --git a/gcc/testsuite/g++.old-deja/g++.ext/comint1.C b/gcc/testsuite/g++.old-deja/g++.ext/comint1.C
index 78d99e6c357..1b8b3c81c45 100644
--- a/gcc/testsuite/g++.old-deja/g++.ext/comint1.C
+++ b/gcc/testsuite/g++.old-deja/g++.ext/comint1.C
@@ -1,4 +1,5 @@
 // Test that we can use mixins with COM classes.
+// Special g++ Options: -fvtable-thunks
 
 struct A
 {