diff --git a/libs/labelFile.py b/libs/labelFile.py
index 590e52f9..f28d9f63 100644
--- a/libs/labelFile.py
+++ b/libs/labelFile.py
@@ -18,7 +18,7 @@ class LabelFileError(Exception):
 
 class LabelFile(object):
     # It might be changed as window creates
-    suffix = '.lif'
+    suffix = '.xml'
 
     def __init__(self, filename=None):
         self.shapes = ()