diff --git a/scripts/upgrade b/scripts/upgrade
index 861fb38..a514d11 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -147,18 +147,14 @@ if [ -z "$ipv4_interface" ] && [ -z "$ipv6_interface" ]; then
 		ynh_die --message="Impossible to find the main network interface, please report this issue."
 elif [ "$ipv4_interface" != "$ipv6_interface" ]; then
 		if [ -z "$ipv4_interface" ]; then
-				echo "bind-interfaces
-except-interface=$ipv6_interface" > "/etc/dnsmasq.d/$app"
+				echo -e "bind-interfaces\nexcept-interface=$ipv6_interface" > "/etc/dnsmasq.d/$app"
 		elif [ -z "$ipv6_interface" ]; then
-				echo "bind-interfaces
-except-interface=$ipv4_interface" > "/etc/dnsmasq.d/$app"
+				echo -e "bind-interfaces\nexcept-interface=$ipv4_interface" > "/etc/dnsmasq.d/$app"
 		else
-				echo "bind-interfaces
-except-interface=$ipv4_interface, $ipv6_interface" > "/etc/dnsmasq.d/$app"
+				echo -e "bind-interfaces\nexcept-interface=$ipv4_interface, $ipv6_interface" > "/etc/dnsmasq.d/$app"
 		fi
 else
-		echo "bind-interfaces
-except-interface=$ipv4_interface" > "/etc/dnsmasq.d/$app"
+		echo -e "bind-interfaces\nexcept-interface=$ipv4_interface" > "/etc/dnsmasq.d/$app"
 fi
 
 systemctl restart dnsmasq