diff --git a/include/ntapi/nt_file.h b/include/ntapi/nt_file.h
index cb27bdf..e1f3e1a 100644
--- a/include/ntapi/nt_file.h
+++ b/include/ntapi/nt_file.h
@@ -1206,7 +1206,7 @@ typedef int32_t __stdcall ntapi_tt_open_logical_parent_directory(
 typedef int32_t __stdcall ntapi_tt_open_physical_parent_directory(
 	__out	void **		hparent,
 	__in	void *		hdir,
-	__out	uintptr_t *	buffer,
+	__out	void *		buffer,
 	__in	uint32_t	buffer_size,
 	__in	uint32_t	oattr,
 	__in	uint32_t	desired_access,
diff --git a/src/fs/ntapi_tt_open_physical_parent_directory.c b/src/fs/ntapi_tt_open_physical_parent_directory.c
index 77ae61d..3476113 100644
--- a/src/fs/ntapi_tt_open_physical_parent_directory.c
+++ b/src/fs/ntapi_tt_open_physical_parent_directory.c
@@ -11,7 +11,7 @@
 int32_t __stdcall __ntapi_tt_open_physical_parent_directory(
 	__out	void **		hparent,
 	__in	void *		hdir,
-	__out	uintptr_t *	buffer,
+	__out	void *		buffer,
 	__in	uint32_t	buffer_size,
 	__in	uint32_t	oattr,
 	__in	uint32_t	desired_access,
@@ -27,10 +27,20 @@ int32_t __stdcall __ntapi_tt_open_physical_parent_directory(
 	nt_unicode_string *	path;
 	uint32_t		len;
 	int			mup;
+	uintptr_t		addr;
+	uintptr_t		addr_cap;
 
 	(void)reserved;
 
-	path = (nt_unicode_string *)buffer;
+	addr     = (uintptr_t)buffer;
+	addr_cap = addr + buffer_size;
+
+	addr += 0xf;
+	addr |= 0xf;
+	addr ^= 0xf;
+
+	path        = (nt_unicode_string *)addr;
+	buffer_size = addr_cap - addr;
 
 	if ((status = __ntapi->zw_query_object(
 			hdir,