diff --git a/tests/runtests.py b/tests/runtests.py
index a1b595fba6..7ee1fd5102 100755
--- a/tests/runtests.py
+++ b/tests/runtests.py
@@ -73,9 +73,9 @@ class TestRunner:
     def run_tests(self):
         from django.conf import settings
 
-	# An empty access of the settings to force the default options to be
-	# installed prior to assigning to them.
-	settings.INSTALLED_APPS
+        # An empty access of the settings to force the default options to be
+        # installed prior to assigning to them.
+        settings.INSTALLED_APPS
 
         # Manually set INSTALLED_APPS to point to the test models.
         settings.INSTALLED_APPS = [MODEL_TESTS_DIR_NAME + '.' + a for a in get_test_models()]