diff --git a/fs/cramfs/inode.c b/fs/cramfs/inode.c
index c45d738..223c043 100644
--- a/fs/cramfs/inode.c
+++ b/fs/cramfs/inode.c
@@ -30,7 +30,7 @@
 static struct super_operations cramfs_ops;
 static struct inode_operations cramfs_dir_inode_operations;
 static const struct file_operations cramfs_directory_operations;
-static struct address_space_operations cramfs_aops;
+static const struct address_space_operations cramfs_aops;
 
 static DEFINE_MUTEX(read_mutex);
 
@@ -501,7 +501,7 @@
 	return 0;
 }
 
-static struct address_space_operations cramfs_aops = {
+static const struct address_space_operations cramfs_aops = {
 	.readpage = cramfs_readpage
 };