diff --git a/src/CoreBundle/Resources/contao/dca/tl_metamodel_rendersetting.php b/src/CoreBundle/Resources/contao/dca/tl_metamodel_rendersetting.php
index 250f6df22..37df43c04 100644
--- a/src/CoreBundle/Resources/contao/dca/tl_metamodel_rendersetting.php
+++ b/src/CoreBundle/Resources/contao/dca/tl_metamodel_rendersetting.php
@@ -224,6 +224,7 @@
                 'tl_class'           => 'w50',
                 'chosen'             => true,
                 'includeBlankOption' => true,
+                'mandatory'          => true,
             ],
             'sql'         => "varchar(64) NOT NULL default ''"
         ],
diff --git a/src/CoreBundle/Resources/translations/tl_metamodel_rendersetting.en.xlf b/src/CoreBundle/Resources/translations/tl_metamodel_rendersetting.en.xlf
index 0bd355579..427c67e78 100644
--- a/src/CoreBundle/Resources/translations/tl_metamodel_rendersetting.en.xlf
+++ b/src/CoreBundle/Resources/translations/tl_metamodel_rendersetting.en.xlf
@@ -76,7 +76,7 @@
         <source>Attribute this setting relates to.</source>
       </trans-unit>
       <trans-unit id="template.label" resname="template.label">
-        <source>Custom template to use for generating</source>
+        <source>Template to use for generating</source>
       </trans-unit>
       <trans-unit id="template.description" resname="template.description">
         <source>Select the template that shall be used for the selected attribute. Valid template files start with "mm_&amp;lt;type&amp;gt;"