diff --git a/scripts/install b/scripts/install
index b17c331..c9dea0d 100755
--- a/scripts/install
+++ b/scripts/install
@@ -158,6 +158,7 @@ if [ ! -z "$mqtt_domain" ]; then
 
 	#Setting up conf file for access
 	ynh_add_config --template="../conf/domoticz_mosquitto.conf" --destination="/etc/mosquitto/conf.d/"$app"_mosquitto.conf"
+	chmod 644 /etc/mosquitto/conf.d/"$app"_mosquitto.conf
 
 	#Setting up user&pwd for mqtt access
 	ynh_app_setting_set --app="$app" --key=mqtt_user --value=$(ynh_string_random --length=8)
diff --git a/scripts/upgrade b/scripts/upgrade
index d230faa..b1d55a8 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -205,6 +205,7 @@ if [ ! -z "$mqtt_domain" ]; then
 	if [ ! -f "/etc/mosquitto/conf.d/"$app"_mosquitto.conf" ]
 	then
 		ynh_add_config --template="../conf/domoticz_mosquitto.conf" --destination="/etc/mosquitto/conf.d/"$app"_mosquitto.conf"
+		chmod 644 /etc/mosquitto/conf.d/"$app"_mosquitto.conf
 
 		#Setting up user&pwd for mqtt access
 		ynh_app_setting_set --app="$app" --key=mqtt_user --value=$(ynh_string_random --length=8)