diff --git a/views/sheets/copy_assignment_dialog.php b/views/sheets/copy_assignment_dialog.php
index 3d522e05ff97ea520ffea84602a9a28145246e89..8f8d8bcb3c550ed3aa90511e4e146c6e0f418da1 100644
--- a/views/sheets/copy_assignment_dialog.php
+++ b/views/sheets/copy_assignment_dialog.php
@@ -36,7 +36,7 @@
             <thead>
                 <tr class="sortable">
                     <th style="width: 45%;" class="<?= vips_sort_class($sort === 'test_title', $desc) ?>">
-                        <input type="checkbox" data-proxyfor=".batch_select" data-activates=".batch_action" title="<?= _vips('Alle Aufgaben auswählen') ?>">
+                        <input type="checkbox" data-proxyfor=".batch_select_d" data-activates=".batch_action_d" title="<?= _vips('Alle Aufgaben auswählen') ?>">
                         <a href="<?= $controller->link_for('sheets/copy_assignment_dialog',
                             compact('search_filter') + ['sort' => 'test_title', 'desc' => $sort === 'test_title' && !$desc]) ?>" data-dialog="size=1200x800">
                             <?= _vips('Aufgabenblatt') ?>
@@ -63,7 +63,7 @@
                     <tr>
                         <td>
                             <label class="undecorated">
-                                <input class="batch_select" type="checkbox" name="assignment_ids[]" value="<?= $assignment['id'] ?>">
+                                <input class="batch_select_d" type="checkbox" name="assignment_ids[]" value="<?= $assignment['id'] ?>">
                                 <?= htmlReady($assignment['test_title']) ?>
 
                                 <a href="<?= $controller->link_for('sheets/show_assignment', ['cid' => $course_id, 'assignment_id' => $assignment['id']]) ?>" target="_blank">
@@ -99,6 +99,6 @@
     <? endif ?>
 
     <footer data-dialog-button>
-        <?= Studip\Button::createAccept(_vips('Kopieren'), 'copy_assignment', ['class' => 'batch_action']) ?>
+        <?= Studip\Button::createAccept(_vips('Kopieren'), 'copy_assignment', ['class' => 'batch_action_d']) ?>
     </footer>
 </form>
diff --git a/views/sheets/copy_exercise_dialog.php b/views/sheets/copy_exercise_dialog.php
index 1feb80f615ed50676ceb5bcc69f9c81b41064d3a..6dd2df5c7e36bfaae91bc28115b74766c2a81333 100644
--- a/views/sheets/copy_exercise_dialog.php
+++ b/views/sheets/copy_exercise_dialog.php
@@ -37,7 +37,7 @@
             <thead>
                 <tr class="sortable">
                     <th style="width: 40%;" class="<?= vips_sort_class($sort === 'title', $desc) ?>">
-                        <input type="checkbox" data-proxyfor=".batch_select" data-activates=".batch_action" title="<?= _vips('Alle Aufgaben auswählen') ?>">
+                        <input type="checkbox" data-proxyfor=".batch_select_d" data-activates=".batch_action_d" title="<?= _vips('Alle Aufgaben auswählen') ?>">
                         <a href="<?= $controller->link_for('sheets/copy_exercise_dialog',
                             compact('assignment_id', 'search_filter') + ['sort' => 'title', 'desc' => $sort === 'title' && !$desc]) ?>" data-dialog="size=big">
                             <?= _vips('Titel der Aufgabe') ?>
@@ -70,7 +70,7 @@
                     <tr>
                         <td>
                             <label class="undecorated">
-                                <input class="batch_select" type="checkbox" name="exercise_ids[<?= $exercise['id'] ?>]" value="<?= $exercise['assignment_id'] ?>">
+                                <input class="batch_select_d" type="checkbox" name="exercise_ids[<?= $exercise['id'] ?>]" value="<?= $exercise['assignment_id'] ?>">
                                 <?= htmlReady($exercise['title']) ?>
 
                                 <a href="<?= $controller->link_for('sheets/preview_exercise', ['assignment_id' => $exercise['assignment_id'], 'exercise_id' => $exercise['id']]) ?>"
@@ -112,6 +112,6 @@
     <? endif ?>
 
     <footer data-dialog-button>
-        <?= Studip\Button::createAccept(_vips('Kopieren'), 'copy_exercise', ['class' => 'batch_action']) ?>
+        <?= Studip\Button::createAccept(_vips('Kopieren'), 'copy_exercise', ['class' => 'batch_action_d']) ?>
     </footer>
 </form>