diff --git a/common/build-style/ruby-module.sh b/common/build-style/ruby-module.sh
index b4fe9c3bca..10c0abbde3 100644
--- a/common/build-style/ruby-module.sh
+++ b/common/build-style/ruby-module.sh
@@ -5,5 +5,5 @@
 do_install() {
 	local _vendorlibdir=$(ruby -e 'puts RbConfig::CONFIG["vendorlibdir"]')
 
-	ruby install.rb --destdir=${DESTDIR} --sitelibdir=${_vendorlibdir} ${make_install_args}
+	LANG=C ruby install.rb --destdir=${DESTDIR} --sitelibdir=${_vendorlibdir} ${make_install_args}
 }