diff --git a/fs/ext2/super.c b/fs/ext2/super.c
index fd88c7b4..647cd88 100644
--- a/fs/ext2/super.c
+++ b/fs/ext2/super.c
@@ -393,7 +393,7 @@
 	Opt_usrquota, Opt_grpquota, Opt_reservation, Opt_noreservation
 };
 
-static match_table_t tokens = {
+static const match_table_t tokens = {
 	{Opt_bsd_df, "bsddf"},
 	{Opt_minix_df, "minixdf"},
 	{Opt_grpid, "grpid"},