diff --git a/glanceclient/v2/images.py b/glanceclient/v2/images.py
index 1e8e621a..c062cb8a 100644
--- a/glanceclient/v2/images.py
+++ b/glanceclient/v2/images.py
@@ -335,13 +335,13 @@ class Controller(object):
         if stores:
             data['stores'] = stores
             if allow_failure:
-                data['all_stores_must_succeed'] = 'false'
+                data['all_stores_must_succeed'] = False
         if backend is not None:
             headers['x-image-meta-store'] = backend
         if all_stores:
-            data['all_stores'] = 'true'
+            data['all_stores'] = True
             if allow_failure:
-                data['all_stores_must_succeed'] = 'false'
+                data['all_stores_must_succeed'] = False
 
         if uri:
             if method == 'web-download':