diff --git a/code/ModelAdmin.php b/code/ModelAdmin.php
index 0840b04e1..84f8621c8 100644
--- a/code/ModelAdmin.php
+++ b/code/ModelAdmin.php
@@ -538,9 +538,14 @@ public function getManagedModels()
 
         // Normalize models to have their model class in array key
         foreach ($models as $k => $v) {
+            // No custom tab url segment
             if (is_numeric($k)) {
                 $models[$v] = ['dataClass' => $v, 'title' => singleton($v)->i18n_plural_name()];
                 unset($models[$k]);
+            // Custom tab url segment but no custom title
+            } elseif (is_a($v, DataObject::class, true)) {
+                $models[$k] = ['dataClass' => $v, 'title' => singleton($v)->i18n_plural_name()];
+            // Custom title but no custom tab url segment
             } elseif (is_array($v) && !isset($v['dataClass'])) {
                 $models[$k]['dataClass'] = $k;
             }