diff --git a/include/linux/kobj_map.h b/include/linux/kobj_map.h
index cbe7d80..bafe178 100644
--- a/include/linux/kobj_map.h
+++ b/include/linux/kobj_map.h
@@ -1,6 +1,6 @@
 #ifdef __KERNEL__
 
-#include <asm/semaphore.h>
+#include <linux/mutex.h>
 
 typedef struct kobject *kobj_probe_t(dev_t, int *, void *);
 struct kobj_map;
@@ -9,6 +9,6 @@
 	     kobj_probe_t *, int (*)(dev_t, void *), void *);
 void kobj_unmap(struct kobj_map *, dev_t, unsigned long);
 struct kobject *kobj_lookup(struct kobj_map *, dev_t, int *);
-struct kobj_map *kobj_map_init(kobj_probe_t *, struct semaphore *);
+struct kobj_map *kobj_map_init(kobj_probe_t *, struct mutex *);
 
 #endif