diff --git a/umap/static/umap/js/modules/importer.js b/umap/static/umap/js/modules/importer.js
index 06575025..889d7ec3 100644
--- a/umap/static/umap/js/modules/importer.js
+++ b/umap/static/umap/js/modules/importer.js
@@ -1,5 +1,6 @@
 import { DomUtil, DomEvent } from '../../vendors/leaflet/leaflet-src.esm.js'
 import { translate } from './i18n.js'
+import { uMapAlert as Alert } from '../components/alerts/alert.js'
 
 export default class Importer {
   constructor(map) {
@@ -163,12 +164,14 @@ export default class Importer {
         this.map.processFileToImport(file, layer, type)
       }
     } else {
-      if (!type) return U.Alert.error(L._('Please choose a format'))
+      if (!type) {
+        return Alert.error(L._('Please choose a format'))
+      }
       if (this.rawInput.value && type === 'umap') {
         try {
           this.map.importRaw(this.rawInput.value, type)
         } catch (e) {
-          U.Alert.error(L._('Invalid umap data'))
+          Alert.error(L._('Invalid umap data'))
           console.error(e)
         }
       } else {
diff --git a/umap/static/umap/js/modules/request.js b/umap/static/umap/js/modules/request.js
index af9b2cfc..07d10cca 100644
--- a/umap/static/umap/js/modules/request.js
+++ b/umap/static/umap/js/modules/request.js
@@ -1,4 +1,5 @@
 import { translate } from './i18n.js'
+import { uMapAlert as Alert } from '../components/alerts/alert.js'
 
 export class RequestError extends Error {}
 
@@ -79,7 +80,7 @@ export class Request extends BaseRequest {
   }
 
   _onError(error) {
-    U.Alert.error(translate('Problem in the response'))
+    Alert.error(translate('Problem in the response'))
   }
 
   _onNOK(error) {
@@ -125,9 +126,9 @@ export class ServerRequest extends Request {
     try {
       const data = await response.json()
       if (data.info) {
-        U.Alert.info(data.info)
+        Alert.info(data.info)
       } else if (data.error) {
-        U.Alert.error(data.error)
+        Alert.error(data.error)
         return this._onError(new Error(data.error))
       }
       return [data, response, null]
@@ -142,7 +143,7 @@ export class ServerRequest extends Request {
 
   _onNOK(error) {
     if (error.status === 403) {
-      U.Alert.error(error.message || translate('Action not allowed :('))
+      Alert.error(error.message || translate('Action not allowed :('))
     }
     return [{}, error.response, error]
   }