diff --git a/dlls/ntoskrnl.exe/ntoskrnl.c b/dlls/ntoskrnl.exe/ntoskrnl.c
index 7838bd95455..861fb53996a 100644
--- a/dlls/ntoskrnl.exe/ntoskrnl.c
+++ b/dlls/ntoskrnl.exe/ntoskrnl.c
@@ -2277,17 +2277,6 @@ PRKTHREAD WINAPI KeGetCurrentThread(void)
     return NULL;
 }
 
- /***********************************************************************
- *           KeWaitForMutexObject   (NTOSKRNL.EXE.@)
- */
-NTSTATUS WINAPI KeWaitForMutexObject(PRKMUTEX Mutex, KWAIT_REASON WaitReason, KPROCESSOR_MODE WaitMode,
-                                     BOOLEAN Alertable, PLARGE_INTEGER Timeout)
-{
-    FIXME( "stub: %p, %d, %d, %d, %p\n", Mutex, WaitReason, WaitMode, Alertable, Timeout );
-    return STATUS_NOT_IMPLEMENTED;
-}
-
-
 /***********************************************************************
  *           KeInitializeSpinLock   (NTOSKRNL.EXE.@)
  */
diff --git a/dlls/ntoskrnl.exe/sync.c b/dlls/ntoskrnl.exe/sync.c
index 0947b671f57..84cb0cee739 100644
--- a/dlls/ntoskrnl.exe/sync.c
+++ b/dlls/ntoskrnl.exe/sync.c
@@ -154,6 +154,16 @@ NTSTATUS WINAPI KeWaitForSingleObject( void *obj, KWAIT_REASON reason,
     return KeWaitForMultipleObjects( 1, &obj, WaitAny, reason, mode, alertable, timeout, NULL );
 }
 
+/***********************************************************************
+ *           KeWaitForMutexObject   (NTOSKRNL.EXE.@)
+ */
+NTSTATUS WINAPI KeWaitForMutexObject( PRKMUTEX mutex, KWAIT_REASON reason,
+    KPROCESSOR_MODE mode, BOOLEAN alertable, LARGE_INTEGER *timeout)
+{
+    return KeWaitForSingleObject( mutex, reason, mode, alertable, timeout );
+}
+
+
 /***********************************************************************
  *           KeInitializeEvent   (NTOSKRNL.EXE.@)
  */