diff --git a/lib/gdbcommand.py b/lib/gdbcommand.py
index 816c41c..143e7a8 100644
--- a/lib/gdbcommand.py
+++ b/lib/gdbcommand.py
@@ -31,7 +31,7 @@ def create_copy_command (props):
     else:
         return [ 'true' ]
 
-    from_path = os.path.join (get_web_base (), builder, commit[:2], commit, 'gdb.sum')
+    from_path = os.path.join (get_web_base (), builder, commit[:2], commit, 'gdb.sum.xz')
     if istry and istry == 'yes':
         to_path = os.path.join (get_web_base (), builder, 'try', rev[:2], rev)
     else: