diff --git a/src/app/udapp/run-tab.js b/src/app/udapp/run-tab.js
index f07d0d8c83..f9cfc583bc 100644
--- a/src/app/udapp/run-tab.js
+++ b/src/app/udapp/run-tab.js
@@ -49,7 +49,7 @@ export class RunTab extends LibraryPlugin {
   }
 
   onActivationInternal () {
-    this.udappUI = new UniversalDAppUI(this.udapp, this.logCallback, this.executionContext)
+    this.udappUI = new UniversalDAppUI(this.blockchain, this.udapp, this.logCallback, this.executionContext)
     this.udapp.resetAPI({
       getAddress: (cb) => {
         cb(null, $('#txorigin').val())
diff --git a/src/app/ui/universal-dapp-ui.js b/src/app/ui/universal-dapp-ui.js
index 0818b6006e..509bbb6874 100644
--- a/src/app/ui/universal-dapp-ui.js
+++ b/src/app/ui/universal-dapp-ui.js
@@ -15,7 +15,8 @@ var txFormat = remixLib.execution.txFormat
 var TreeView = require('./TreeView')
 var txCallBacks = require('./sendTxCallbacks')
 
-function UniversalDAppUI (udapp, logCallback, executionContext) {
+function UniversalDAppUI (blockchain, udapp, logCallback, executionContext) {
+  this.blockchain = blockchain
   this.udapp = udapp
   this.logCallback = logCallback
   this.compilerData = {contractsDetails: {}}