diff --git a/ansi-tests/doit.lsp b/ansi-tests/doit.lsp
index f9e48bc864d823e654919166f4581b6d9766eff6..c999955bc764a66817f6d60058e9b50591ef05c5 100644
--- a/ansi-tests/doit.lsp
+++ b/ansi-tests/doit.lsp
@@ -31,6 +31,10 @@
   (rtest:disable-note :allow-nil-arrays)
   (rtest:disable-note :nil-vectors-are-strings))
 
+#+cmu
+(progn
+ (rt:disable-note :nil-vectors-are-strings))
+
 #+gcl(si::use-fast-links nil)
 
 (in-package :cl-test)