diff --git a/app/Resources/static/themes/material/css/nav.scss b/app/Resources/static/themes/material/css/nav.scss
index 1a25a5beb..7898f662c 100644
--- a/app/Resources/static/themes/material/css/nav.scss
+++ b/app/Resources/static/themes/material/css/nav.scss
@@ -95,6 +95,11 @@ nav {
     display: flex;
     flex: 1;
   }
+
+  &.nav-panel-add form.disabled,
+  &.nav-panel-add form.disabled input {
+    background-color: whitesmoke;
+  }
 }
 
 #button_filters {
diff --git a/app/Resources/static/themes/material/index.js b/app/Resources/static/themes/material/index.js
index d6afbb8a3..36505d714 100755
--- a/app/Resources/static/themes/material/index.js
+++ b/app/Resources/static/themes/material/index.js
@@ -50,6 +50,11 @@ $(document).ready(() => {
     $('#entry_url').focus();
     return false;
   });
+  const materialAddForm = $('.nav-panel-add form[name=entry]');
+  materialAddForm.on('submit', () => {
+    materialAddForm.addClass('disabled');
+    $('input#entry_url', materialAddForm).prop('readonly', true).trigger('blur');
+  });
   $('#nav-btn-search').on('click', () => {
     $('.nav-panel-buttom').hide(100);
     $('.nav-panel-search').show(100);