diff --git a/data_embed/index.html b/data_embed/index.html
index cfeb6ba..25df80c 100644
--- a/data_embed/index.html
+++ b/data_embed/index.html
@@ -604,11 +604,11 @@
                                                 type="number"
                                                 name="beacon.interval"
                                                 id="beacon.interval"
-                                                placeholder="15"
                                                 class="form-control"
-                                                required=""
+                                                value="15"
+                                                min="10"
                                                 step="1"
-                                                min="15"
+                                                required
                                             />
                                             <span class="input-group-text"
                                                 >minutes