diff --git a/lms/djangoapps/badges/tests/test_models.py b/lms/djangoapps/badges/tests/test_models.py
index bb7e2535fd..6573a21218 100644
--- a/lms/djangoapps/badges/tests/test_models.py
+++ b/lms/djangoapps/badges/tests/test_models.py
@@ -23,7 +23,7 @@ from lms.djangoapps.badges.models import (
     validate_badge_image
 )
 from lms.djangoapps.badges.tests.factories import BadgeAssertionFactory, BadgeClassFactory, RandomBadgeClassFactory
-from lms.djangoapps.certificates.tests.test_models import TEST_DATA_ROOT
+from lms.djangoapps.certificates.tests.test_models import TEST_DATA_ROOT, TEST_DATA_DIR
 from xmodule.modulestore.tests.django_utils import ModuleStoreTestCase
 from xmodule.modulestore.tests.factories import CourseFactory
 
@@ -32,7 +32,7 @@ def get_image(name):
     """
     Get one of the test images from the test data directory.
     """
-    return ImageFile(open(TEST_DATA_DIR / 'badges' / name + '.png', mode='rb'))  # lint-amnesty, pylint: disable=bad-option-value, open-builtin
+    return ImageFile(open(f'{TEST_DATA_DIR}/badges/{name}.png', mode='rb'))  # lint-amnesty, pylint: disable=bad-option-value, open-builtin
 
 
 @override_settings(MEDIA_ROOT=TEST_DATA_ROOT)