diff --git a/index.html b/index.html
index f62f5dc..aaababb 100644
--- a/index.html
+++ b/index.html
@@ -203,24 +203,26 @@
                         </button>
                     </div>
                     <div class="modal-body">
-                        <input
-                            class="form-control"
-                            type="text"
-                            id="layer_name"
-                            spellcheck="true"
-                            wrap="off"
-                            data-i18n="[placeholder]layers.placeholder-layer-name"
-                            placeholder="Custom layer name. (ex: OpenStreetMap)"
-                        />
-                        <input
-                            class="form-control"
-                            type="text"
-                            id="layer_url"
-                            spellcheck="false"
-                            wrap="off"
-                            data-i18n="[placeholder]layers.placeholder-layer-url"
-                            placeholder="Custom layer URL. (ex: https://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png)"
-                        />
+                        <div class="form-group">
+                            <label for="layer_name" data-i18n="layers.custom-layer-name-label">Custom layer name</label>
+                            <input class="form-control" type="text" id="layer_name" spellcheck="true" wrap="off" />
+                            <p class="help-block" data-i18n="layers.custom-layer-name-helptext">ex: OpenStreetMap</p>
+                        </div>
+
+                        <div class="form-group">
+                            <label for="layer_name" data-i18n="layers.custom-layer-url-label"
+                                >Custom layer URL/Query</label
+                            >
+                            <input class="form-control" type="text" id="layer_url" spellcheck="false" wrap="off" />
+                            <p class="help-block">
+                                <span data-i18n="layers.custom-layer-url-helptext-normal"
+                                    >URL for normal layers, ex: https://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png</span
+                                ><br />
+                                <span data-i18n="layers.custom-layer-url-helptext-overpass"
+                                    >Overpass Query, ex: nwr[shop]['diet:vegan']['diet:vegan'!=no];</span
+                                >
+                            </p>
+                        </div>
 
                         <button
                             type="button"
diff --git a/locales/en.json b/locales/en.json
index cdd7888..e93ec46 100644
--- a/locales/en.json
+++ b/locales/en.json
@@ -71,10 +71,13 @@
     "add-base": "Add base layer",
     "add-overlay": "Add overlay",
     "add-overpass": "Add overpass query",
+    "custom-layer-name-helptext": "ex: OpenStreetMap",
+    "custom-layer-name-label": "Custom layer name",
+    "custom-layer-url-helptext-normal": "URL for normal layers, ex: https://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png",
+    "custom-layer-url-helptext-overpass": "Overpass Query, ex: nwr[shop]['diet:vegan']['diet:vegan'!=no];",
+    "custom-layer-url-label": "Custom layer URL/Query",
     "customize": "Customize layers",
     "opacity-slider": "Opacity slider",
-    "placeholder-layer-name": "Custom layer name. (ex: OpenStreetMap)",
-    "placeholder-layer-url": "Custom layer URL. (ex: https://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png)",
     "remove-selection": "Remove selection"
   },
   "loadNogos": {
@@ -244,7 +247,7 @@
       "overlay-opacity": "Overlay transparency",
       "overlay-opacity_plural": "Overlays transparency",
       "table": {
-        "URL": "URL",
+        "URL": "URL/Query",
         "empty": "No custom layer configured yet.",
         "name": "Name",
         "type": "Type",
@@ -294,4 +297,4 @@
     "new-version": "A new version was released since your last visit. Click <a href='.' data-toggle='modal' data-target='#whatsnew'>here</a> to see what's new!",
     "title": "What's new?"
   }
-}
+}
\ No newline at end of file