diff --git a/usr/local/share/bastille/common.sh b/usr/local/share/bastille/common.sh
index afe07a5f..2b7ea6af 100644
--- a/usr/local/share/bastille/common.sh
+++ b/usr/local/share/bastille/common.sh
@@ -112,7 +112,7 @@ check_target_is_stopped() {
 generate_static_mac() {
     local jail_name="${1}"
     local external_interface="${2}"
-    local external_interface_mac="$(ifconfig ${external_interface} | grep ether | awk '{print $2}' | sed 's#:##g')"
+    local external_interface_mac="$(ifconfig ${external_interface} | grep ether | awk '{print $2}')"
     local macaddr_prefix="$(echo ${external_interface_mac} | cut -d':' -f1-3)"
     local macaddr_suffix="$(echo -n "${external_interface_mac}${jail_name}" | sed 's#:##g' | sha256 | cut -b -5 | sed 's/\([0-9a-fA-F][0-9a-fA-F]\)\([0-9a-fA-F][0-9a-fA-F]\)\([0-9a-fA-F]\)/\1:\2:\3/')"
     if [ -z "${macaddr_prefix}" ] || [ -z "${macaddr_suffix}" ]; then