diff --git a/umap/static/umap/js/modules/autocomplete.js b/umap/static/umap/js/modules/autocomplete.js
index e6e55b92..48c0cdaa 100644
--- a/umap/static/umap/js/modules/autocomplete.js
+++ b/umap/static/umap/js/modules/autocomplete.js
@@ -222,12 +222,16 @@ export class BaseAutocomplete {
 }
 
 export class BaseAjax extends BaseAutocomplete {
-  URL = '/foobar/?q={q}'
   constructor(el, options) {
     super(el, options)
+    this.setUrl()
     this.initRequest()
   }
 
+  setUrl() {
+    this.url = this.options?.url
+  }
+
   initRequest() {
     this.request = new Request()
   }
@@ -248,7 +252,7 @@ export class BaseAjax extends BaseAutocomplete {
     if (val === this.cache) return
     else this.cache = val
     val = val.toLowerCase()
-    const url = Util.template(this.URL, { q: encodeURIComponent(val) })
+    const url = Util.template(this.url, { q: encodeURIComponent(val) })
     this.handleResults(await this._search(url))
   }
 
@@ -261,7 +265,10 @@ export class BaseAjax extends BaseAutocomplete {
 }
 
 class BaseServerAjax extends BaseAjax {
-  URL = '/agnocomplete/AutocompleteUser/?q={q}'
+  setUrl() {
+    this.url = '/agnocomplete/AutocompleteUser/?q={q}'
+  }
+
   initRequest() {
     this.server = new ServerRequest()
   }
diff --git a/umap/static/umap/js/modules/importers/communesfr.js b/umap/static/umap/js/modules/importers/communesfr.js
index 5fa3ee62..845c2125 100644
--- a/umap/static/umap/js/modules/importers/communesfr.js
+++ b/umap/static/umap/js/modules/importers/communesfr.js
@@ -2,8 +2,6 @@ import { DomUtil } from '../../../vendors/leaflet/leaflet-src.esm.js'
 import { BaseAjax, SingleMixin } from '../autocomplete.js'
 
 class Autocomplete extends SingleMixin(BaseAjax) {
-  URL = 'https://geo.api.gouv.fr/communes?nom={q}&limit=5'
-
   createResult(item) {
     return super.createResult({
       value: item.code,
@@ -26,6 +24,7 @@ export class Importer {
       textContent: "Importer les contours d'une commune française.",
     })
     const options = {
+      url: 'https://geo.api.gouv.fr/communes?nom={q}&limit=5',
       on_select: (choice) => {
         importer.url = `https://geo.api.gouv.fr/communes?code=${choice.item.value}&format=geojson&geometry=contour`
         importer.format = 'geojson'
diff --git a/umap/static/umap/js/modules/importers/geodatamine.js b/umap/static/umap/js/modules/importers/geodatamine.js
index ea7efac4..0a46b828 100644
--- a/umap/static/umap/js/modules/importers/geodatamine.js
+++ b/umap/static/umap/js/modules/importers/geodatamine.js
@@ -21,8 +21,6 @@ const TEMPLATE = `
 `
 
 class Autocomplete extends SingleMixin(BaseAjax) {
-  URL = 'https://geodatamine.fr/boundaries/search?text={q}'
-
   createResult(item) {
     return super.createResult({
       value: item.id,
@@ -58,6 +56,7 @@ export class Importer {
     }
     const asPoint = container.querySelector('[name=aspoint]')
     this.autocomplete = new Autocomplete(container, {
+      url: `${this.baseUrl}/boundaries/search?text={q}`,
       on_select: (choice) => {
         boundary = choice.item.value
       },