diff --git a/src/treesit.c b/src/treesit.c
index 0effb5d13b5..d1c50771e23 100644
--- a/src/treesit.c
+++ b/src/treesit.c
@@ -487,8 +487,11 @@ treesit_initialize (void)
 
 /*** Debugging */
 
-void treesit_debug_print_parser_list (char *, Lisp_Object);
-void treesit_debug_print_parser_list (char *msg, Lisp_Object parser)
+void
+treesit_debug_print_parser_list (char *, Lisp_Object);
+
+void
+treesit_debug_print_parser_list (char *msg, Lisp_Object parser)
 {
   struct buffer *buf = XBUFFER (XTS_PARSER (parser)->buffer);
   char *buf_name = SSDATA (BVAR (buf, name));