diff --git a/fs/openpromfs/inode.c b/fs/openpromfs/inode.c
index d88173840..6b7ff16 100644
--- a/fs/openpromfs/inode.c
+++ b/fs/openpromfs/inode.c
@@ -131,7 +131,7 @@
 	/* Nothing to do */
 }
 
-static struct seq_operations property_op = {
+static const struct seq_operations property_op = {
 	.start		= property_start,
 	.next		= property_next,
 	.stop		= property_stop,