1 files changed, 1 insertions, 1 deletions

diff --git a/regress/try-ciphers.sh b/regress/try-ciphers.sh
index 87ec7497a..084a1457a 100644
--- a/regress/try-ciphers.sh
+++ b/regress/try-ciphers.sh
@@ -32,7 +32,7 @@ for c in $ciphers; do
                 case $c in
                 aes*-gcm@openssh.com)   test $n -gt 0 && break;;
                 esac
-                n=$(($n + 1))
+                n=`expr $n + 1`
         done
 done