diff --git a/lib/protractor.js b/lib/protractor.js
index 66c2d9a0e..f43dbf2a0 100644
--- a/lib/protractor.js
+++ b/lib/protractor.js
@@ -584,6 +584,12 @@ var buildElementHelper = function(ptor) {
         // -1 is special and means last
         index = arr.length - 1;
       }
+
+      if (index >= arr.length) {
+        throw new Error('Index out of bound. Trying to access index:' + index + 
+            ', but locator: ' + locatorMessage + ' only has ' + 
+            arr.length + ' elements');
+      }
       return arr[index];
     });
     return new webdriver.WebElement(ptor.driver, id);