diff --git a/config/.Sanitize b/config/.Sanitize
index fb325d6c35..764bc58d49 100644
--- a/config/.Sanitize
+++ b/config/.Sanitize
@@ -38,6 +38,7 @@ mh-hpux
 mh-hpux8
 mh-irix4
 mh-irix5
+mh-irix6
 mh-linux
 mh-lynxos
 mh-lynxrs6k