diff --git a/snappergui/changesWindow.py b/snappergui/changesWindow.py
index 44a2203..a01088b 100644
--- a/snappergui/changesWindow.py
+++ b/snappergui/changesWindow.py
@@ -162,7 +162,7 @@ def on_idle_init_paths_tree(self):
 
     def get_lines_from_file(self, path):
         try:
-            return open(path, 'U').readlines()
+            return open(path).readlines()
         except IsADirectoryError:
             pass
         except FileNotFoundError: