diff --git a/src/Cornford/Googlmapper/Mapper.php b/src/Cornford/Googlmapper/Mapper.php
index b768729..7f4ade2 100644
--- a/src/Cornford/Googlmapper/Mapper.php
+++ b/src/Cornford/Googlmapper/Mapper.php
@@ -176,7 +176,7 @@ public function location($location)
         $postalCode = null;
 
         foreach ($resultObject->results[0]->address_components as $addressComponent) {
-            if ($addressComponent->types[0] == 'postal_code') {
+            if (count($addressComponent->types) > 0 && $addressComponent->types[0] == 'postal_code') {
                 $postalCode = $addressComponent->long_name;
             }
         }