diff --git a/reactos/include/ndk/haltypes.h b/reactos/include/ndk/haltypes.h
index f7d5e57082a..272a0d4fdc2 100644
--- a/reactos/include/ndk/haltypes.h
+++ b/reactos/include/ndk/haltypes.h
@@ -88,7 +88,7 @@ VOID
 );
 
 typedef
-BOOLEAN
+NTSTATUS
 (NTAPI *pHalAllocateMapRegisters)(
     IN PADAPTER_OBJECT AdapterObject,
     IN ULONG Unknown,