diff --git a/regress/agent-restrict.sh b/regress/agent-restrict.sh
index cd8486e18..a30aed7bf 100644
--- a/regress/agent-restrict.sh
+++ b/regress/agent-restrict.sh
@@ -1,4 +1,4 @@
-#	$OpenBSD: agent-restrict.sh,v 1.4 2022/01/13 04:22:10 dtucker Exp $
+#	$OpenBSD: agent-restrict.sh,v 1.5 2022/01/13 04:53:16 dtucker Exp $
 #	Placed in the Public Domain.
 
 tid="agent restrictions"
@@ -52,6 +52,10 @@ done
 cat $OBJ/ssh_proxy.bak >> $OBJ/ssh_proxy
 cat $OBJ/ssh_proxy.bak >> $OBJ/ssh_proxy_noid
 
+LC_ALL=C
+export LC_ALL
+echo "SetEnv LC_ALL=${LC_ALL}" >> sshd_proxy
+
 verbose "prepare known_hosts"
 rm -f $OBJ/known_hosts
 for h in a b c x ; do