diff --git a/customize.dist/src/less/toolbar.less b/customize.dist/src/less/toolbar.less
index c216e2835..df68bc8c4 100644
--- a/customize.dist/src/less/toolbar.less
+++ b/customize.dist/src/less/toolbar.less
@@ -414,6 +414,8 @@
     margin-bottom: -1px;
     .cryptpad-dropdown-users {
         pre {
+            /* needed for ckeditor */
+            white-space: pre;
             margin: 5px 0px;
         }
     }
diff --git a/customize.dist/toolbar.css b/customize.dist/toolbar.css
index 2b80dc69c..ba7d7ea35 100644
--- a/customize.dist/toolbar.css
+++ b/customize.dist/toolbar.css
@@ -489,6 +489,8 @@
   margin-bottom: -1px;
 }
 .cryptpad-toolbar-leftside .cryptpad-dropdown-users pre {
+  /* needed for ckeditor */
+  white-space: pre;
   margin: 5px 0px;
 }
 .cryptpad-toolbar-leftside button {