diff --git a/tests/modules/test_brightness.py b/tests/modules/test_brightness.py
index 5582bcc..9b91d8f 100644
--- a/tests/modules/test_brightness.py
+++ b/tests/modules/test_brightness.py
@@ -8,6 +8,11 @@ try:
 except ImportError:
     from io import StringIO
 
+try:
+    FileNotFoundError
+except NameError:
+    FileNotFoundError = IOError
+
 import tests.mocks as mocks
 
 from bumblebee.config import Config