diff --git a/source/lock.h b/source/lock.h
index 304761d..8b205fd 100644
--- a/source/lock.h
+++ b/source/lock.h
@@ -51,6 +51,43 @@ static inline void _NTFS_unlock(mutex_t *mutex)
 {
 	LWP_MutexUnlock(*mutex);
 }
+/* //not working.
+#elif defined(__wiiu__)
+#ifndef mutex_t
+typedef int mutex_t;
+#endif
+
+#define OS_MUTEX_SIZE 44
+
+extern void (* OSInitMutex)(void* mutex);
+extern void (* OSLockMutex)(void* mutex);
+extern void (* OSUnlockMutex)(void* mutex);
+extern void (* OSFatal)(const char *msg);
+
+static inline void _NTFS_lock_init(mutex_t *mutex,int unkwn){
+    void* new_mutex = malloc(OS_MUTEX_SIZE);
+    if(new_mutex == NULL){
+        OSFatal("_NTFS_lock_init malloc fail");
+    }
+
+    *mutex = (mutex_t) new_mutex;
+    OSInitMutex(new_mutex);
+}
+
+static inline void _NTFS_lock_deinit(mutex_t *mutex){
+    free((void*)(*mutex));
+    *mutex = 0;
+}
+
+static inline void _NTFS_lock(mutex_t *mutex)
+{
+    OSLockMutex((void*)*mutex);
+}
+
+static inline void _NTFS_unlock(mutex_t *mutex)
+{
+    OSUnlockMutex((void*)*mutex);
+}*/
 
 #else
 
diff --git a/source/ntfsinternal.h b/source/ntfsinternal.h
index a8debd4..5de7add 100644
--- a/source/ntfsinternal.h
+++ b/source/ntfsinternal.h
@@ -152,13 +152,13 @@ typedef struct _ntfs_vd {
 /* Lock volume */
 static inline void ntfsLock (ntfs_vd *vd)
 {
-    _NTFS_lock((mutex_t *)vd->lock);
+    _NTFS_lock((mutex_t *)&vd->lock);
 }
 
 /* Unlock volume */
 static inline void ntfsUnlock (ntfs_vd *vd)
 {
-    _NTFS_unlock((mutex_t *)vd->lock);
+    _NTFS_unlock((mutex_t *)&vd->lock);
 }
 
 /* Gekko device related routines */