diff --git a/lib/dns.js b/lib/dns.js
index 86b01ce713..ad919cc477 100644
--- a/lib/dns.js
+++ b/lib/dns.js
@@ -186,7 +186,7 @@ exports.resolve = function(domain, type_, callback_) {
   if (typeof resolver === 'function') {
     return resolver(domain, callback);
   } else {
-    throw new Error('Unknown type "' + type + '"');
+    throw new Error('Unknown type "' + type_ + '"');
   }
 };
 
diff --git a/test/simple/test-c-ares.js b/test/simple/test-c-ares.js
index 7210dc2f14..3a3a9223d8 100644
--- a/test/simple/test-c-ares.js
+++ b/test/simple/test-c-ares.js
@@ -42,6 +42,11 @@ dns.lookup('::1', function(error, result, addressType) {
   assert.equal(6, addressType);
 });
 
+// Try calling resolve with an unsupported type.
+assert.throws(function() {
+  dns.resolve('www.google.com', 'HI');
+}, /Unknown type/);
+
 // Windows doesn't usually have an entry for localhost 127.0.0.1 in
 // C:\Windows\System32\drivers\etc\hosts
 // so we disable this test on Windows.