diff --git a/mayan/apps/storage/utils.py b/mayan/apps/storage/utils.py
index 66c97cc655..d6c56ec8a4 100644
--- a/mayan/apps/storage/utils.py
+++ b/mayan/apps/storage/utils.py
@@ -8,7 +8,12 @@ import tempfile
 from pathlib2 import Path
 
 from django.utils.module_loading import import_string
-from django.utils.six import PY3
+try:
+    from django.utils.six import PY3
+except ImportError:
+    # This is being imported outside of Django
+    import sys
+    PY3 = sys.version_info[0] == 3
 
 from .settings import setting_temporary_directory