Index: layer_vis.c
===================================================================
--- layer_vis.c	(revision 25192)
+++ layer_vis.c	(revision 25193)
@@ -266,7 +266,7 @@
 	/* do NOT generate an event: some callers want to handle that */
 }
 
-static void layer_vis_grp_defaults(void *user_data, int argc, pcb_event_arg_t argv[])
+static void layer_vis_grp_defaults(pcb_hidlib_t *hidlib, void *user_data, int argc, pcb_event_arg_t argv[])
 {
 	pcb_layergrp_id_t gid;