Find labels manually when input.labels isn't supported

index.js

@@ -50,7 +50,9 @@
     var inputElements = context.querySelectorAll('input[type=text], textarea')
     for (var i = 0; i < inputElements.length; i++) {
       var input = inputElements[i]
-      if (input.labels && !input.labels.length && !elementIsHidden(input) && !input.hasAttribute('aria-label')) {
+      // In case input.labels isn't supported by browser, find the control manually (IE)
+      var label = input.labels ? input.labels[0] : input.closest('label') || document.querySelector('label[for="' + input.id + '"]')
+      if (!label && !elementIsHidden(input) && !input.hasAttribute('aria-label')) {
         logError(new ElementWithoutLabelError(input))
       }
     }