diff --git a/generate.sh b/generate.sh
index a0687da..530aed4 100755
--- a/generate.sh
+++ b/generate.sh
@@ -3,6 +3,8 @@ set -e
 cd "$(dirname "$0")"
 source util/vars.sh
 
+export LC_ALL=C.UTF-8
+
 rm -f Dockerfile Dockerfile.{dl,final,dl.final}
 
 layername() {