diff --git a/bash/src/base.output.sh b/bash/src/base.output.sh
index e83c69d..d120126 100644
--- a/bash/src/base.output.sh
+++ b/bash/src/base.output.sh
@@ -8,6 +8,7 @@ NULIB__LATIN1=iso-8859-1
 NULIB__LATIN9=iso-8859-15
 NULIB__UTF8=utf-8
 
+[ -n "$LANG" ] || export LANG=fr_FR.UTF-8
 if [ ! -x "$(which iconv 2>/dev/null)" ]; then
     function iconv() { cat; }
 fi