diff --git a/src/wg-quick.bash b/src/wg-quick.bash
index 012e41f..6edcd3a 100755
--- a/src/wg-quick.bash
+++ b/src/wg-quick.bash
@@ -117,7 +117,7 @@ set_mtu() {
 		return
 	fi
 	while read -r _ endpoint; do
-		[[ $endpoint =~ ^([a-z0-9:.]+):[0-9]+$ ]] || continue
+		[[ $endpoint =~ ^\[?([a-z0-9:.]+)\]?:[0-9]+$ ]] || continue
 		output="$(ip route get "${BASH_REMATCH[1]}" || true)"
 		[[ ( $output =~ mtu\ ([0-9]+) || ( $output =~ dev\ ([^ ]+) && $(ip link show dev "${BASH_REMATCH[1]}") =~ mtu\ ([0-9]+) ) ) && ${BASH_REMATCH[1]} -gt $mtu ]] && mtu="${BASH_REMATCH[1]}"
 	done < <(wg show "$INTERFACE" endpoints)