diff --git a/src/wanijo/instance/domain.clj b/src/wanijo/instance/domain.clj
index 3ec9aa6..ebd08e2 100644
--- a/src/wanijo/instance/domain.clj
+++ b/src/wanijo/instance/domain.clj
@@ -117,11 +117,12 @@
 
 (neo4j/defquery delete
   "MATCH (i:instance {uuid:{uuid}}),
-         (i)-[ic:of]->(s:schema)
+         (i)-[ic:of]->(s:schema),
+         (i)-[cb:created_by]->(:user)
    OPTIONAL MATCH
          (p:property)-[pc:of]->(i),
          (p)-[pac:of]->(a:attribute)
-   DELETE pac, pc, ic, p, i")
+   DELETE pac, pc, cb, ic, p, i")
 
 (defn delete! [uuid]
   (neo4j/exec-query! delete {:uuid uuid}))