diff --git a/util/genbuild_h/genbuild_h.sh b/util/genbuild_h/genbuild_h.sh
index 84aad7ddea..be72f81f52 100755
--- a/util/genbuild_h/genbuild_h.sh
+++ b/util/genbuild_h/genbuild_h.sh
@@ -23,6 +23,7 @@ GITREV=""
 TIMESOURCE=""
 
 export LANG=C
+export LC_ALL=C
 export TZ=UTC
 
 if [ -d "${top}/.git" ] && [ -f "$(command -v git)" ]; then