diff --git a/modules/cas_cache/disk.c b/modules/cas_cache/disk.c
index 59f22a2..4069579 100644
--- a/modules/cas_cache/disk.c
+++ b/modules/cas_cache/disk.c
@@ -13,6 +13,11 @@
 
 #define CASDSK_DISK_OPEN_FMODE (FMODE_READ | FMODE_WRITE)
 
+static inline struct casdsk_disk *casdsk_kobj_to_disk(struct kobject *kobj)
+{
+	return container_of(kobj, struct casdsk_disk, kobj);
+}
+
 static inline struct block_device *open_bdev_exclusive(const char *path,
 						       fmode_t mode,
 						       void *holder)
diff --git a/modules/cas_cache/disk.h b/modules/cas_cache/disk.h
index 62867f6..27bdc78 100644
--- a/modules/cas_cache/disk.h
+++ b/modules/cas_cache/disk.h
@@ -41,9 +41,5 @@ void casdsk_deinit_disks(void);
 
 int casdsk_disk_allocate_minors(int count);
 
-static inline struct casdsk_disk *casdsk_kobj_to_disk(struct kobject *kobj)
-{
-	return container_of(kobj, struct casdsk_disk, kobj);
-}
 
 #endif
diff --git a/modules/cas_cache/exp_obj.c b/modules/cas_cache/exp_obj.c
index d681dc4..29f045c 100644
--- a/modules/cas_cache/exp_obj.c
+++ b/modules/cas_cache/exp_obj.c
@@ -20,6 +20,11 @@
 #define CASDSK_DEV_MINORS 16
 #define KMEM_CACHE_MIN_SIZE sizeof(void *)
 
+static inline struct casdsk_exp_obj *casdsk_kobj_to_exp_obj(struct kobject *kobj)
+{
+	return container_of(kobj, struct casdsk_exp_obj, kobj);
+}
+
 static inline int bd_claim_by_disk(struct block_device *bdev, void *holder,
 				   struct gendisk *disk)
 {
diff --git a/modules/cas_cache/exp_obj.h b/modules/cas_cache/exp_obj.h
index 0e55912..24c5bab 100644
--- a/modules/cas_cache/exp_obj.h
+++ b/modules/cas_cache/exp_obj.h
@@ -40,9 +40,4 @@ void casdsk_deinit_exp_objs(void);
 
 void casdsk_exp_obj_free(struct casdsk_disk *dsk);
 
-static inline struct casdsk_exp_obj *casdsk_kobj_to_exp_obj(struct kobject *kobj)
-{
-	return container_of(kobj, struct casdsk_exp_obj, kobj);
-}
-
 #endif