diff --git a/scripts/install b/scripts/install
index 831b362..77ff61a 100755
--- a/scripts/install
+++ b/scripts/install
@@ -214,8 +214,8 @@ then
 	timezone=$(cat /etc/timezone)
 	ynh_add_config --template="../conf/config.js" --destination="$final_path/infcloud/config.js"
 
-	chmod 400 "$final_path/infcloud/config.js"
-	chown $app:$app "$final_path/infcloud/config.js"
+	chmod 440 "$final_path/infcloud/config.js"
+	chown $app:www-data "$final_path/infcloud/config.js"
 fi
 
 #=================================================
diff --git a/scripts/upgrade b/scripts/upgrade
index 43f6fbc..b7612d2 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -324,6 +324,8 @@ then
 		fi
 		# Recalculate and store the checksum of the file for the next upgrade.
 		ynh_store_file_checksum --file="$final_path/infcloud/config.js"
+		chmod 440 "$final_path/infcloud/config.js"
+		chown $app:www-data "$final_path/infcloud/config.js"
 	fi
 fi