diff --git a/shub/login.py b/shub/login.py
index c570d1bc..55ec73b5 100644
--- a/shub/login.py
+++ b/shub/login.py
@@ -10,7 +10,7 @@ def cli(context):
     if key and is_valid_key(key):
         descriptor = os.open(
             NETRC_FILE,
-            os.O_CREAT | os.O_RDWR | os.O_APPEND, 0600)
+            os.O_CREAT | os.O_RDWR | os.O_APPEND, 0o600)
         with os.fdopen(descriptor, 'a+') as out:
             line = 'machine scrapinghub.com login {0} password ""\n'.format(key)
             out.write(line)
diff --git a/shub/tool.py b/shub/tool.py
index 443ee79f..31c37a95 100644
--- a/shub/tool.py
+++ b/shub/tool.py
@@ -26,7 +26,7 @@ def cli():
     "version": [],
 }
 
-for command, modules in module_deps.iteritems():
+for command, modules in module_deps.items():
     m = missing_modules(*modules)
     if m:
         cli.add_command(missingmod_cmd(m), command)