diff --git a/evms.scm b/evms.scm
index 47e3698..e2b0ee3 100644
--- a/evms.scm
+++ b/evms.scm
@@ -30,8 +30,8 @@
     ("/var/www" . "nodev,relatime")
     ("/var/cache/squid" . "nodev,noexec,nosuid,relatime")
     ("/tmp" . "nosuid,relatime")
-    ("/efi" . "umask=0077,nosuid,nodev,noexec")
-    ("/boot/efi" . "umask=0077,nosuid,nodev,noexec")))
+    ("/efi" . "umask=0077,nosuid,nodev,noexec,iocharset=ascii,utf8=1")
+    ("/boot/efi" . "umask=0077,nosuid,nodev,noexec,iocharset=ascii,utf8=1")))
 
 (define bare-mountpoints '("/boot/efi"))