diff --git a/src/Plugin/Field/FieldWidget/InlineEntityFormSimple.php b/src/Plugin/Field/FieldWidget/InlineEntityFormSimple.php
index fcf1a6c..31e2a9d 100644
--- a/src/Plugin/Field/FieldWidget/InlineEntityFormSimple.php
+++ b/src/Plugin/Field/FieldWidget/InlineEntityFormSimple.php
@@ -154,7 +154,7 @@ class InlineEntityFormSimple extends InlineEntityFormBase {
       return FALSE;
     }
 
-    if (count($field_definition->getSettings()['handler_settings']['target_bundles']) != 1) {
+    if (isset($field_definition->getSettings()['handler_settings']['target_bundles']) && count($field_definition->getSettings()['handler_settings']['target_bundles']) != 1) {
       return FALSE;
     }