diff --git a/src/Fieldtypes/BaseFieldtype.php b/src/Fieldtypes/BaseFieldtype.php
index 5e0f3e34..7ff135da 100644
--- a/src/Fieldtypes/BaseFieldtype.php
+++ b/src/Fieldtypes/BaseFieldtype.php
@@ -114,7 +114,7 @@ public function preload()
 
     private function getUnlinkBehavior(): string
     {
-        if ($this instanceof BelongsToFieldtype) {
+        if ($this instanceof BelongsToFieldtype || !$this->field->parent()) {
             return 'unlink';
         }