diff --git a/scripts/_common.sh b/scripts/_common.sh
index 0f53f77..4cd6e10 100644
--- a/scripts/_common.sh
+++ b/scripts/_common.sh
@@ -110,3 +110,15 @@ ynh_remove_systemd_config () {
 		ynh_secure_remove "$finalsystemdconf"
 	fi
 }
+
+# ============= FUTURE YUNOHOST HELPER =============
+# Delete a file checksum from the app settings
+#
+# $app should be defined when calling this helper
+#
+# usage: ynh_remove_file_checksum file
+# | arg: file - The file for which the checksum will be deleted
+ynh_delete_file_checksum () {
+	local checksum_setting_name=checksum_${1//[\/ ]/_}	# Replace all '/' and ' ' by '_'
+	ynh_app_setting_delete $app $checksum_setting_name
+}
\ No newline at end of file
diff --git a/scripts/change_url b/scripts/change_url
index deed315..51b3b36 100644
--- a/scripts/change_url
+++ b/scripts/change_url
@@ -57,20 +57,25 @@ nginx_conf_path=/etc/nginx/conf.d/$old_domain.d/$app.conf
 # Change the path in the nginx config file
 if [ $change_path -eq 1 ]
 then
+  # Make a backup of the original nginx config file if modified
   ynh_backup_if_checksum_is_different "$nginx_conf_path"
   # Replace locations starting with old_path
   # Look for every location possible patterns (see https://nginx.org/en/docs/http/ngx_http_core_module.html#location)
   ynh_replace_string "location\( \(=\|~\|~\*\|\^~\)\)\? $old_path" "location\1 $new_path"  "$nginx_conf_path"
   # Replace path in "return" directives
   ynh_replace_string "return \([[:digit:]]\{3\}\) $old_path" "return \1 $new_path"  "$nginx_conf_path"
+  # Calculate and store the nginx config file checksum
   ynh_store_file_checksum "$nginx_conf_path"
 fi
 
 # Change the domain for nginx
 if [ $change_domain -eq 1 ]
 then
+  # Delete file checksum for the old conf file location
+  ynh_delete_file_checksum "$nginx_conf_path"
 	mv $nginx_conf_path /etc/nginx/conf.d/$new_domain.d/$app.conf
-  ynh_store_file_checksum "$nginx_conf_path"
+  # Store file checksum for the new config file location
+  ynh_store_file_checksum "/etc/nginx/conf.d/$new_domain.d/$app.conf"
 fi
 
 #=================================================