diff --git a/bin/swift-ring-builder b/bin/swift-ring-builder
index ef86729ffa..0d636f620a 100755
--- a/bin/swift-ring-builder
+++ b/bin/swift-ring-builder
@@ -41,10 +41,10 @@ def format_device(dev):
     Format a device for display.
     """
     if ':' in dev['ip']:
-        return ('d%(id)sr%(region)z%(zone)s-'
+        return ('d%(id)sr%(region)sz%(zone)s-'
                 '[%(ip)s]:%(port)s/%(device)s_"%(meta)s"') % dev
     else:
-        return ('d%(id)sr%(region)z%(zone)s-'
+        return ('d%(id)sr%(region)sz%(zone)s-'
                 '%(ip)s:%(port)s/%(device)s_"%(meta)s"') % dev
 
 
@@ -471,7 +471,7 @@ swift-ring-builder <builder_file> remove <search-value> [search-value ...]
             if len(devs) > 1:
                 print 'Matched more than one device:'
                 for dev in devs:
-                    print '    d%(id)sr%(region)z%(zone)s-%(ip)s:%(port)s/' \
+                    print '    d%(id)sr%(region)sz%(zone)s-%(ip)s:%(port)s/' \
                           '%(device)s_"%(meta)s"' % dev
                 if raw_input('Are you sure you want to remove these %s '
                              'devices? (y/N) ' % len(devs)) != 'y':
@@ -494,7 +494,7 @@ swift-ring-builder <builder_file> remove <search-value> [search-value ...]
                     print '-' * 79
                     exit(EXIT_ERROR)
 
-                print 'd%(id)sr%(region)z%(zone)s-%(ip)s:%(port)s/' \
+                print 'd%(id)sr%(region)sz%(zone)s-%(ip)s:%(port)s/' \
                       '%(device)s_"%(meta)s" marked for removal and will ' \
                       'be removed next rebalance.' % dev
         pickle.dump(builder.to_dict(), open(argv[1], 'wb'), protocol=2)