diff --git a/Configuration/TCA/Overrides/tt_content.php b/Configuration/TCA/Overrides/tt_content.php
index 9f85569..3093b31 100644
--- a/Configuration/TCA/Overrides/tt_content.php
+++ b/Configuration/TCA/Overrides/tt_content.php
@@ -66,7 +66,7 @@
             'Some Description of the Container', // description
             [
                 [
-                    ['name' => 'content', 'colPos' => 200],
+                    ['name' => 'content', 'colPos' => 200, 'disallowedContentTypes' => 'b13-1col'],
                 ]
             ] // grid configuration
         )