diff --git a/src/treesit.c b/src/treesit.c
index 416c1edf791..6e806039df0 100644
--- a/src/treesit.c
+++ b/src/treesit.c
@@ -1450,7 +1450,9 @@ an indirect buffer.  */)
   ts_parser_set_language (parser, lang);
 
   /* Create parser.  */
-  Lisp_Object lisp_parser = make_treesit_parser (Fcurrent_buffer (),
+  Lisp_Object lisp_buf;
+  XSETBUFFER (lisp_buf, buf);
+  Lisp_Object lisp_parser = make_treesit_parser (lisp_buf,
 						 parser, NULL,
 						 language, tag);