diff --git a/src/add-ons/kernel/drivers/input/usb_hid/BeOSCompatibility.h b/src/add-ons/kernel/drivers/input/usb_hid/BeOSCompatibility.h
deleted file mode 100644
index cfbd47c72b..0000000000
--- a/src/add-ons/kernel/drivers/input/usb_hid/BeOSCompatibility.h
+++ /dev/null
@@ -1,50 +0,0 @@
-/*
-	Driver for USB Human Interface Devices.
-	Copyright (C) 2008 Michael Lotz <mmlr@mlotz.ch>
-	Distributed under the terms of the MIT license.
-*/
-#ifndef HAIKU_TARGET_PLATFORM_HAIKU
-#ifndef _BEOS_COMPATIBILITY_H_
-#define _BEOS_COMPATIBILITY_H_
-
-#include <OS.h>
-
-typedef struct mutex {
-	sem_id	sem;
-	int32	count;
-} mutex;
-
-
-static inline void
-mutex_init(mutex *lock, const char *name)
-{
-	lock->sem = create_sem(0, name);
-	lock->count = 0;
-}
-
-
-static inline void
-mutex_destroy(mutex *lock)
-{
-	delete_sem(lock->sem);
-}
-
-
-static inline status_t
-mutex_lock(mutex *lock)
-{
-	if (atomic_add(&lock->count, -1) < 0)
-		return acquire_sem(lock->sem);
-	return B_OK;
-}
-
-
-static inline void
-mutex_unlock(mutex *lock)
-{
-	if (atomic_add(&lock->count, 1) < -1)
-		release_sem(lock->sem);
-}
-
-#endif /* !HAIKU_TARGET_PLATFORM_HAIKU */
-#endif /* _BEOS_COMPATIBILITY_H_ */