diff --git a/management/templates/system-backup.html b/management/templates/system-backup.html
index 463d811f..297c21fe 100644
--- a/management/templates/system-backup.html
+++ b/management/templates/system-backup.html
@@ -122,25 +122,19 @@
   <div class="form-group backup-target-b2">
       <label for="backup-target-b2-user" class="col-sm-2 control-label">B2 Application KeyID</label>
       <div class="col-sm-8">
-      <input type="text" class="form-control" rows="1" id="backup-target-b2-user" onchange="compute_b2_url()">
+      <input type="text" class="form-control" rows="1" id="backup-target-b2-user">
       </div>
   </div>
   <div class="form-group backup-target-b2">
       <label for="backup-target-b2-pass" class="col-sm-2 control-label">B2 Application Key</label>
       <div class="col-sm-8">
-      <input type="text" class="form-control" rows="1" id="backup-target-b2-pass" onchange="compute_b2_url()">
+      <input type="text" class="form-control" rows="1" id="backup-target-b2-pass">
       </div>
   </div>
   <div class="form-group backup-target-b2">
       <label for="backup-target-b2-bucket" class="col-sm-2 control-label">B2 Bucket</label>
       <div class="col-sm-8">
-      <input type="text" placeholder="B2 Bucket" class="form-control" rows="1" id="backup-target-b2-bucket" onchange="compute_b2_url()">
-      </div>
-  </div>
-  <div class="form-group backup-target-b2">
-      <label for="backup-target-b2-url" class="col-sm-2 control-label">B2 Backup URL</label>
-      <div class="col-sm-8">
-      <input type="text" placeholder="Will be filled automatically" class="form-control" rows="1" id="backup-target-b2-url" disabled>
+      <input type="text" class="form-control" rows="1" id="backup-target-b2-bucket">
       </div>
   </div>
   <!-- Common -->
@@ -285,7 +279,6 @@ function show_custom_backup() {
           $("#backup-target-b2-user").val(b2_application_keyid);
           $("#backup-target-b2-pass").val(b2_applicationkey);
           $("#backup-target-b2-bucket").val(b2_bucket);
-          compute_b2_url();
         }
         toggle_form()
       })
@@ -306,7 +299,8 @@ function set_custom_backup() {
                                                                 + "/" + $("#backup-target-rsync-path").val();
     target_user = '';
   } else if (target_type == "b2") {
-    target = $('#backup-target-b2-url').val();
+    target = 'b2://' + $('#backup-target-b2-user').val() + ':' + $('#backup-target-b2-pass').val()
+        + '@' + $('#backup-target-b2-bucket').val()
     target_user = '';
     target_pass = '';
   }
@@ -348,13 +342,4 @@ function init_inputs(target_type) {
     set_host($('#backup-target-s3-host-select').val());
   }
 }
-
-function compute_b2_url(){
-  if ($('#backup-target-b2-user').val() && $('#backup-target-b2-pass').val() && $('#backup-target-b2-bucket').val()){
-    $('#backup-target-b2-url').val('b2://' + $('#backup-target-b2-user').val() + ':' + $('#backup-target-b2-pass').val()
-        + '@' + $('#backup-target-b2-bucket').val());
-  }else{
-    $('#backup-target-b2-url').val('');
-  }
-}
 </script>
\ No newline at end of file