diff --git a/typo3/sysext/reactions/Configuration/TCA/Overrides/sys_reaction_create_record.php b/typo3/sysext/reactions/Configuration/TCA/Overrides/sys_reaction_create_record.php
index ec99b2b2677b4248132e64e85c5b6ec63b666b0b..7fdd9868deb73c703196529e5e8aaa8f664cce0d 100644
--- a/typo3/sysext/reactions/Configuration/TCA/Overrides/sys_reaction_create_record.php
+++ b/typo3/sysext/reactions/Configuration/TCA/Overrides/sys_reaction_create_record.php
@@ -20,6 +20,7 @@
             'config' => [
                 'type' => 'json',
                 'renderType' => 'fieldMap',
+                'default' => '{}',
             ],
         ],
     ]