diff --git a/tools/python/xen/xm/main.py b/tools/python/xen/xm/main.py
index 54d72195bc..3df329c9ac 100644
--- a/tools/python/xen/xm/main.py
+++ b/tools/python/xen/xm/main.py
@@ -233,7 +233,7 @@ def xm_list(args):
                
     if use_long:
         for dom in doms:
-            PrettyPrint.prettyprint(doms)
+            PrettyPrint.prettyprint(dom)
     else:
         domsinfo = map(parse_doms_info, doms)