diff --git a/octodns/provider/mythicbeasts.py b/octodns/provider/mythicbeasts.py
index 17029db..b255a74 100644
--- a/octodns/provider/mythicbeasts.py
+++ b/octodns/provider/mythicbeasts.py
@@ -328,7 +328,7 @@ class MythicBeastsProvider(BaseProvider):
 
         exists = True
         for line in resp.content.splitlines():
-            match = MythicBeastsProvider.RE_POPLINE.match(line)
+            match = MythicBeastsProvider.RE_POPLINE.match(line.decode("utf-8"))
 
             if match is None:
                 self.log.debug('failed to match line: %s', line)
diff --git a/tests/test_octodns_provider_mythicbeasts.py b/tests/test_octodns_provider_mythicbeasts.py
index b93d46e..498b408 100644
--- a/tests/test_octodns_provider_mythicbeasts.py
+++ b/tests/test_octodns_provider_mythicbeasts.py
@@ -441,11 +441,11 @@ class TestMythicBeastsProvider(TestCase):
             plan = provider.plan(wanted)
 
             # Octo ignores NS records (15-1)
-            self.assertEquals(1, len(filter(lambda u: isinstance(u, Update),
-                              plan.changes)))
-            self.assertEquals(1, len(filter(lambda d: isinstance(d, Delete),
-                              plan.changes)))
-            self.assertEquals(14, len(filter(lambda c: isinstance(c, Create),
-                              plan.changes)))
+            self.assertEquals(1, len(list(filter(
+                lambda u: isinstance(u, Update), plan.changes))))
+            self.assertEquals(1, len(list(filter(
+                lambda d: isinstance(d, Delete), plan.changes))))
+            self.assertEquals(14, len(list(filter(
+                lambda c: isinstance(c, Create), plan.changes))))
             self.assertEquals(16, provider.apply(plan))
             self.assertTrue(plan.exists)