Index: constraint_gui.c
===================================================================
--- constraint_gui.c	(revision 37000)
+++ constraint_gui.c	(revision 37001)
@@ -172,7 +172,7 @@
 	rnd_actionva(&PCB->hidlib, "tang", NULL);
 }
 
-void cons_gui_confchg(rnd_conf_native_t *cfg, int arr_idx)
+void cons_gui_confchg(rnd_conf_native_t *cfg, int arr_idx, void *user_data)
 {
 	if (!cnstgui_ctx.active || cnstgui_ctx.inhibit_confchg)
 		return;
Index: ddraft.c
===================================================================
--- ddraft.c	(revision 37000)
+++ ddraft.c	(revision 37001)
@@ -516,7 +516,7 @@
 };
 
 
-static void mode_confchg(rnd_conf_native_t *cfg, int arr_idx)
+static void mode_confchg(rnd_conf_native_t *cfg, int arr_idx, void *user_data)
 {
 	static int ddraft_tool_selected = 0;