diff --git a/pmb/install/_install.py b/pmb/install/_install.py
index e500ac67..b6498bbd 100644
--- a/pmb/install/_install.py
+++ b/pmb/install/_install.py
@@ -784,7 +784,7 @@ def create_fstab(args, layout, suffix):
     boot_filesystem = args.deviceinfo["boot_filesystem"] or "ext2"
     if boot_filesystem in ("fat16", "fat32"):
         boot_filesystem = "vfat"
-        boot_options += ",umask=0077,nosymfollow"
+        boot_options += ",umask=0077,nosymfollow,codepage=437,iocharset=ascii"
     root_filesystem = pmb.install.get_root_filesystem(args)
 
     if root_filesystem == "btrfs":