diff --git a/troveclient/base.py b/troveclient/base.py
index 58b848e1..44ac425d 100644
--- a/troveclient/base.py
+++ b/troveclient/base.py
@@ -108,7 +108,7 @@ class Manager(utils.HookableMixin):
         cache_dir = os.path.expanduser(os.path.join(base_dir, uniqifier))
 
         try:
-            os.makedirs(cache_dir, 0755)
+            os.makedirs(cache_dir, 0o755)
         except OSError:
             # NOTE(kiall): This is typicaly either permission denied while
             #              attempting to create the directory, or the directory