diff --git a/icefall/.decode.py.swp b/icefall/.decode.py.swp
index 402434e87..47ad63282 100644
Binary files a/icefall/.decode.py.swp and b/icefall/.decode.py.swp differ
diff --git a/icefall/decode.py b/icefall/decode.py
index 68b74a8f1..1e26e4e5d 100644
--- a/icefall/decode.py
+++ b/icefall/decode.py
@@ -50,7 +50,7 @@ DEFAULT_LM_SCALE = [
     5.0,
 ]
 '''
-DEFAULT_LM_SCALE = [0.]
+DEFAULT_LM_SCALE = [0.,]
 
 def _intersect_device(
     a_fsas: k2.Fsa,