diff --git a/src/compiler/GF/Compile/PGFtoPython.hs b/src/compiler/GF/Compile/PGFtoPython.hs
index 00910171b..a4268b714 100644
--- a/src/compiler/GF/Compile/PGFtoPython.hs
+++ b/src/compiler/GF/Compile/PGFtoPython.hs
@@ -21,7 +21,7 @@ import qualified Data.IntMap as IntMap
 import Data.List (intersperse)
 
 pgf2python :: PGF -> String
-pgf2python pgf = ("# -*- coding: UTF-8 -*-" ++++
+pgf2python pgf = ("# -*- coding: utf-8 -*-" ++++
                   "# This file was automatically generated by GF" +++++
                   showCId name +++ "=" +++ 
                   pyDict 1 pyStr id [