diff --git a/evocheck.sh b/evocheck.sh
index 37e6cc5..ee5836a 100755
--- a/evocheck.sh
+++ b/evocheck.sh
@@ -308,7 +308,7 @@ if [ -e /etc/debian_version ]; then
     # Verification si bind est chroote
     if [ "$IS_BINDCHROOT" = 1 ]; then
         if is_installed bind9; then
-            if grep -qE '^OPTIONS=".*-t"' /etc/default/bind9 && grep -qE '^OPTIONS=".*-u"' /etc/default/bind9; then
+            if grep -q '^OPTIONS=".*-t' /etc/default/bind9 && grep -q '^OPTIONS=".*-u' /etc/default/bind9; then
                 if [ "$(md5sum /usr/sbin/named |cut -f 1 -d ' ')" = "$(md5sum /var/chroot-bind/usr/sbin/named |cut -f 1 -d ' ')" ]; then
                     echo 'IS_BINDCHROOT FAILED!'
                 fi