diff --git a/dm-sflc/src/sysfs.c b/dm-sflc/src/sysfs.c
index 9782ca8..fc1f98f 100644
--- a/dm-sflc/src/sysfs.c
+++ b/dm-sflc/src/sysfs.c
@@ -31,7 +31,7 @@
  *----------------------------
  */
 
-static ssize_t next_dev_id_show(struct module_attribute *mattr, struct module_kobject *mkobj, char *buf)
+static ssize_t next_dev_id_show(const struct module_attribute *mattr, struct module_kobject *mkobj, char *buf)
 {
 	ssize_t ret;