diff --git a/t/100-init.t b/t/100-init.t
index b25499e52e8736bb595c721fa6a76170d434fb48..74facc02655ba9db6b733c754d6685b61d43813d 100644
--- a/t/100-init.t
+++ b/t/100-init.t
@@ -1,5 +1,7 @@
 #!/usr/bin/perl
 
+BEGIN { $ENV{LC_ALL} = 'C' }
+
 use strict;
 use warnings;