diff --git a/src/pty/ntapi_pty_fd.c b/src/pty/ntapi_pty_fd.c
index ea62874..8e6110d 100644
--- a/src/pty/ntapi_pty_fd.c
+++ b/src/pty/ntapi_pty_fd.c
@@ -177,23 +177,28 @@ int32_t	__stdcall __ntapi_pty_open(
 	uint32_t		open_options)
 {
 	int32_t			status;
-	uint32_t		hash;
 	nt_guid			guid;
 	nt_uuid_str_utf16 *	guid_str;
 	nt_pty *		ctx;
+	wchar16_t *		wch;
 
+	/* validate */
 	if (!obj_attr || !obj_attr->obj_name || !obj_attr->obj_name->buffer)
 		return NT_STATUS_INVALID_PARAMETER;
 
 	if (obj_attr->obj_name->strlen != __DEVICE_PATH_PREFIX_LEN + sizeof(nt_guid_str_utf16))
 		return NT_STATUS_OBJECT_PATH_INVALID;
 
-	hash = __ntapi->tt_buffer_crc32(
-		0,
-		obj_attr->obj_name->buffer,
-		__DEVICE_PATH_PREFIX_LEN);
+	wch = obj_attr->obj_name->buffer;
 
-	if (hash != __DEVICE_PATH_PREFIX_HASH)
+	if ((wch[0] != '\\')
+			|| (wch[1] != 'D')
+			|| (wch[2] != 'e')
+			|| (wch[3] != 'v')
+			|| (wch[4] != 'i')
+			|| (wch[5] != 'c')
+			|| (wch[6] != 'e')
+			|| (wch[7] != '\\'))
 		return NT_STATUS_OBJECT_PATH_INVALID;
 
 	guid_str = (nt_uuid_str_utf16 *)