diff --git a/lib/dataContract/DataContract.js b/lib/dataContract/DataContract.js
index edcd6aa95..bec7adc26 100644
--- a/lib/dataContract/DataContract.js
+++ b/lib/dataContract/DataContract.js
@@ -160,7 +160,7 @@ class DataContract {
 
     const definitions = this.getDefinitions();
 
-    if (Object.getOwnPropertyNames(definitions).length) {
+    if (definitions && Object.getOwnPropertyNames(definitions).length) {
       json.definitions = definitions;
     }
 
diff --git a/package-lock.json b/package-lock.json
index 356fe8e1d..b954c7403 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,6 +1,6 @@
 {
   "name": "@dashevo/dpp",
-  "version": "0.12.0-dev.7",
+  "version": "0.12.0-dev.8",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
diff --git a/package.json b/package.json
index 8f2f7a57e..5d62c79fe 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@dashevo/dpp",
-  "version": "0.12.0-dev.7",
+  "version": "0.12.0-dev.8",
   "description": "The JavaScript implementation of the Dash Platform Protocol",
   "scripts": {
     "lint": "eslint .",