diff --git a/src/ORM/Association/SelectableAssociationTrait.php b/src/ORM/Association/SelectableAssociationTrait.php
index c6a3e113ce3..f32f6ed4fcd 100644
--- a/src/ORM/Association/SelectableAssociationTrait.php
+++ b/src/ORM/Association/SelectableAssociationTrait.php
@@ -240,7 +240,7 @@ protected function _buildSubquery($query)
         }
 
         $fields = $query->aliasFields($keys, $this->source()->alias());
-        return $filterQuery->select($fields, true);
+        return $filterQuery->select($fields, true)->distinct();
     }
 
     /**