diff --git a/lib/core/config.js b/lib/core/config.js
index 5c755f01..b7fb5b00 100644
--- a/lib/core/config.js
+++ b/lib/core/config.js
@@ -123,8 +123,14 @@ Config.prototype._updateBlockchainCors = function(){
   }
 
   let cors = corsParts.join(',');
-  if(blockchainConfig.rpcCorsDomain === 'auto' && cors.length) blockchainConfig.rpcCorsDomain = cors;
-  if(blockchainConfig.wsOrigins === 'auto' && cors.length) blockchainConfig.wsOrigins = cors;
+  if(blockchainConfig.rpcCorsDomain === 'auto'){ 
+    if(cors.length) blockchainConfig.rpcCorsDomain = cors;
+    else blockchainConfig.rpcCorsDomain = '';
+  }
+  if(blockchainConfig.wsOrigins === 'auto'){ 
+    if(cors.length) blockchainConfig.wsOrigins = cors;
+    else blockchainConfig.wsOrigins = '';
+  }
 };
 
 Config.prototype._mergeConfig = function(configFilePath, defaultConfig, env, enabledByDefault) {
diff --git a/lib/modules/whisper/index.js b/lib/modules/whisper/index.js
index 7206d452..be174340 100644
--- a/lib/modules/whisper/index.js
+++ b/lib/modules/whisper/index.js
@@ -13,6 +13,10 @@ class Whisper {
     this.web3 = new Web3();
     this.embark = embark;
 
+    if (!this.communicationConfig.enabled) {
+      return;
+    }
+
     this.connectToProvider();
     this.setServiceCheck();
     this.addWhisperToEmbarkJS();