diff --git a/src/ConnectionAdapter.php b/src/ConnectionAdapter.php
index c5f6180..bfd2ad7 100644
--- a/src/ConnectionAdapter.php
+++ b/src/ConnectionAdapter.php
@@ -33,7 +33,7 @@ class ConnectionAdapter
             $this->adapter = $this->instanciateAdapter($adapterName);
         }
         else {
-            throw new \InvalidArgumentException("Adapter not found within your configuration array.");
+            throw new \InvalidArgumentException(sprintf("Adapter not found within your configuration array. (%s)", json_encode($connection)));
         }
         
         $this->adapter->setup($connection);
diff --git a/src/Repository.php b/src/Repository.php
index 24f859e..7deb446 100644
--- a/src/Repository.php
+++ b/src/Repository.php
@@ -114,7 +114,7 @@ class Repository
             throw new Exception\EntityPrimaryKeyUnknown("A primary key value has to be defined to delete an item.");
         }
 
-        return (bool) $this->wherePrimaryKey($value, null)->deleteOne()->rowCount;
+        return (bool) $this->wherePrimaryKey($value, false)->deleteOne()->rowCount;
     }
 
     public function destroy(object $entity) : bool