diff --git a/src/Persistence/Sql/Join.php b/src/Persistence/Sql/Join.php
index 8a0ed7e536..0d5eb9b484 100644
--- a/src/Persistence/Sql/Join.php
+++ b/src/Persistence/Sql/Join.php
@@ -131,6 +131,8 @@ public function afterLoad(Model $entity): void
 
     public function beforeInsert(Model $entity, array &$data): void
     {
+        $this->getForeignModel(); // DEBUG assert modelled join table for write operation
+
         if ($this->weak) {
             return;
         }
@@ -158,6 +160,8 @@ public function beforeInsert(Model $entity, array &$data): void
 
     public function afterInsert(Model $entity): void
     {
+        $this->getForeignModel(); // DEBUG assert modelled join table for write operation
+
         if ($this->weak) {
             return;
         }
@@ -178,6 +182,8 @@ public function afterInsert(Model $entity): void
 
     public function beforeUpdate(Model $entity, array &$data): void
     {
+        $this->getForeignModel(); // DEBUG assert modelled join table for write operation
+
         if ($this->weak) {
             return;
         }
@@ -198,6 +204,8 @@ public function beforeUpdate(Model $entity, array &$data): void
 
     public function doDelete(Model $entity): void
     {
+        $this->getForeignModel(); // DEBUG assert modelled join table for write operation
+
         if ($this->weak) {
             return;
         }