diff --git a/lib/utils/yamlAstParser.js b/lib/utils/yamlAstParser.js
index ff6d4435e..a86c7d4dd 100644
--- a/lib/utils/yamlAstParser.js
+++ b/lib/utils/yamlAstParser.js
@@ -5,6 +5,7 @@ const BbPromise = require('bluebird');
 const fs = BbPromise.promisifyAll(require('fs'));
 const _ = require('lodash');
 const os = require('os');
+const chalk = require('chalk');
 
 const findKeyChain = (astContent) => {
   let content = astContent;
@@ -24,6 +25,11 @@ const parseAST = (ymlAstContent, astObject) => {
   let newAstObject = astObject || {};
   if (ymlAstContent.mappings && _.isArray(ymlAstContent.mappings)) {
     _.forEach(ymlAstContent.mappings, (v) => {
+      if (!v.value) {
+        console.log(`Serverless: ${chalk.red(`Your serverless.yml has an invalid value with key: ${v.key.value}. Ignoring...`)}`);
+        return;
+      }
+
       if (v.key.kind === 0 && v.value.kind === 0) {
         newAstObject[findKeyChain(v)] = v.value;
       } else if (v.key.kind === 0 && v.value.kind === 2) {