diff --git a/sim/igen/.Sanitize b/sim/igen/.Sanitize
index 354d9d8e5a6..7c4ed1979e6 100644
--- a/sim/igen/.Sanitize
+++ b/sim/igen/.Sanitize
@@ -25,6 +25,9 @@ Things-to-keep:
 
 ChangeLog
 Makefile.in
+config.in
+configure
+configure.in
 filter.c
 filter.h
 filter_host.c