diff --git a/package.json b/package.json
index e0df7400..a32dc020 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@artemisag/mobx-async-store",
-  "version": "7.0.7",
+  "version": "7.0.8-ar4",
   "license": "MIT",
   "module": "dist/mobx-async-store.esm.js",
   "main": "dist/mobx-async-store.cjs.js",
diff --git a/src/Model.js b/src/Model.js
index c666a1c2..ea275ed8 100644
--- a/src/Model.js
+++ b/src/Model.js
@@ -817,11 +817,11 @@ class Model {
 
     if (options.relationships) {
       filteredRelationshipNames = this.relationshipNames
-        .filter(name => options.relationships.includes(name))
+        .filter(name => options.relationships.includes(name) && this.relationships[name] !== undefined)
 
       const relationships = filteredRelationshipNames.reduce((rels, key) => {
         rels[key] = toJS(this.relationships[key])
-        if (rels[key] == null) {
+        if (rels[key] === null) {
           rels[key] = { data: null }
         } else {
           stringifyIds(rels[key])