diff --git a/tornado/test/netutil_test.py b/tornado/test/netutil_test.py
index df58e1f4..b35b7947 100644
--- a/tornado/test/netutil_test.py
+++ b/tornado/test/netutil_test.py
@@ -44,7 +44,7 @@ class _ResolverTestMixin(object):
     @gen_test
     def test_localhost(self: typing.Any):
         addrinfo = yield self.resolver.resolve("localhost", 80, socket.AF_UNSPEC)
-        # Most of the time localhost resovles to either the ipv4 loopback
+        # Most of the time localhost resolves to either the ipv4 loopback
         # address alone, or ipv4+ipv6. But some versions of pycares will only
         # return the ipv6 version, so we have to check for either one alone.
         self.assertTrue(