diff --git a/application/views/lehre/lvplanung/adminZeitverfuegbarkeit.php b/application/views/lehre/lvplanung/adminZeitverfuegbarkeit.php
index 3566c5b59..18675c03f 100644
--- a/application/views/lehre/lvplanung/adminZeitverfuegbarkeit.php
+++ b/application/views/lehre/lvplanung/adminZeitverfuegbarkeit.php
@@ -133,7 +133,9 @@ $this->load->view(
                         <button type="submit" id="btn-save" class="btn btn-primary btn-w200 pull-right">
                             <?php echo ucfirst($this->p->t('ui', 'speichern')); ?>
                         </button>
-                        <button type="button" id="btn-delete" class="btn btn-danger btn-w200 btn-mr5 pull-right" disabled>
+                        <button type="button" id="btn-delete" class="btn btn-danger btn-w200 btn-mr5 pull-right" disabled
+                                data-toggle="tooltip" data-placement="right"
+                                title="Zum Löschen LektorIn aus Tabelle wählen">
                             <?php echo ucfirst($this->p->t('ui', 'loeschen')); ?>
                         </button>
                         <button type="reset" id="btn-break" class="btn btn-default btn-w200 btn-mr5 pull-right">
diff --git a/public/js/lehre/lvplanung/zverfueg.js b/public/js/lehre/lvplanung/zverfueg.js
index 2774a5662..bd8a82408 100644
--- a/public/js/lehre/lvplanung/zverfueg.js
+++ b/public/js/lehre/lvplanung/zverfueg.js
@@ -139,11 +139,11 @@ var Zverfueg = {
             .find('textarea[name=bezeichnung]').val('');
     },
     disableFormElements: function (){
-        $('#btn-delete').prop('disabled', true);
+        $('#btn-delete').prop('disabled', true).tooltip('enable');
         $('#mitarbeiter_uid').prop('disabled', false);
     },
     enableFormElements: function (){
-        $('#btn-delete').prop('disabled', false);
+        $('#btn-delete').prop('disabled', false).tooltip('disable');
         $('#mitarbeiter_uid').prop('disabled', true);
     }
 }