diff --git a/src/functional_tests/base.py b/src/functional_tests/base.py
index 16f53f2..8c08812 100644
--- a/src/functional_tests/base.py
+++ b/src/functional_tests/base.py
@@ -61,12 +61,15 @@ class FunctionalTest(StaticLiveServerTestCase):
         super().tearDown()
 
     def _test_has_failed(self):
-        return any(
-            failure[0] == self
-            for failure in itertools.chain(
-                self._outcome.result.failures, self._outcome.result.errors
+        try:
+            return any(
+                failure[0] == self
+                for failure in itertools.chain(
+                    self._outcome.result.failures, self._outcome.result.errors
+                )
             )
-        )
+        except TypeError:
+            return False
     
     def take_screenshot(self):
         path = SCREEN_DUMP_LOCATION / self._get_filename("png")
@@ -156,12 +159,15 @@ class ChannelsFunctionalTest(ChannelsLiveServerTestCase):
         super().tearDown()
 
     def _test_has_failed(self):
-        return any(
-            failure[0] == self
-            for failure in itertools.chain(
-                self._outcome.result.failures, self._outcome.result.errors
+        try:
+            return any(
+                failure[0] == self
+                for failure in itertools.chain(
+                    self._outcome.result.failures, self._outcome.result.errors
+                )
             )
-        )
+        except TypeError:
+            return False
 
     def take_screenshot(self):
         path = SCREEN_DUMP_LOCATION / self._get_filename("png")