diff --git a/app/assets/javascripts/edit/id.js.erb b/app/assets/javascripts/edit/id.js.erb
index 3af6fd3dc6..588aa1e86a 100644
--- a/app/assets/javascripts/edit/id.js.erb
+++ b/app/assets/javascripts/edit/id.js.erb
@@ -2,6 +2,7 @@ $(document).ready(function () {
   const id = $("#id-embed");
 
   if (id.data("configured") === false) {
+    // eslint-disable-next-line no-alert
     alert(I18n.t("site.edit.id_not_configured"));
     return;
   }
diff --git a/app/assets/javascripts/index.js b/app/assets/javascripts/index.js
index 8ef067740d..4555553ee7 100644
--- a/app/assets/javascripts/index.js
+++ b/app/assets/javascripts/index.js
@@ -255,6 +255,7 @@ $(document).ready(function () {
       fetch(url, { mode: "no-cors", signal: AbortSignal.timeout(5000) })
         .then(callback)
         .catch(function () {
+          // eslint-disable-next-line no-alert
           alert(I18n.t("site.index.remote_failed"));
         });
     }
diff --git a/app/assets/javascripts/index/directions-endpoint.js b/app/assets/javascripts/index/directions-endpoint.js
index 30d499ad73..3fdae7c541 100644
--- a/app/assets/javascripts/index/directions-endpoint.js
+++ b/app/assets/javascripts/index/directions-endpoint.js
@@ -108,6 +108,7 @@ OSM.DirectionsEndpoint = function Endpoint(map, input, iconUrl, dragCallback, ch
       delete endpoint.geocodeRequest;
       if (json.length === 0) {
         input.addClass("is-invalid");
+        // eslint-disable-next-line no-alert
         alert(I18n.t("javascripts.directions.errors.no_place", { place: endpoint.value }));
         return;
       }
diff --git a/config/eslint.js b/config/eslint.js
index cb421a9920..f70cbc6c05 100644
--- a/config/eslint.js
+++ b/config/eslint.js
@@ -86,7 +86,7 @@ module.exports = [
       "curly": ["error", "multi-line", "consistent"],
       "dot-notation": "error",
       "eqeqeq": ["error", "smart"],
-      "no-alert": "warn",
+      "no-alert": "error",
       "no-array-constructor": "error",
       "no-caller": "error",
       "no-console": "warn",