diff --git a/build/autoconf/lustre-build.m4 b/build/autoconf/lustre-build.m4
index faa1919193f12e7341d034a8f4b7f355d3865566..012f1bcc107d61dc01c3dcd91a9282a95c493765 100644
--- a/build/autoconf/lustre-build.m4
+++ b/build/autoconf/lustre-build.m4
@@ -664,7 +664,7 @@ fi
 
 AC_SUBST(ac_configure_args)
 
-MOSTLYCLEANFILES='.*.cmd .*.flags *.o *.ko *.mod.c .depend .*.1.*'
+MOSTLYCLEANFILES='.*.cmd .*.flags *.o *.ko *.mod.c .depend .*.1.* Modules.symvers'
 AC_SUBST(MOSTLYCLEANFILES)
 
 AC_OUTPUT