diff --git display/simgraph0.cc display/simgraph0.cc
index c4df101426..3228d02208 100644
--- display/simgraph0.cc
+++ display/simgraph0.cc
@@ -386,6 +386,10 @@ void draw_bezier_rgb(KOORD_VAL, KOORD_VAL, KOORD_VAL, KOORD_VAL, KOORD_VAL, KOOR
 {
 }
 
+void display_right_triangle_rgb(KOORD_VAL, KOORD_VAL, KOORD_VAL, const PIXVAL, const bool)
+{
+}
+
 void display_set_progress_text(const char *)
 {
 }
@@ -427,10 +431,6 @@ void add_poly_clip(int, int, int, int, int)
 
 void clear_all_poly_clip()
 {
-void display_right_triangle_rgb(KOORD_VAL, KOORD_VAL, KOORD_VAL, const PIXVAL, const bool)
-{
-}
-
 }
 
 void activate_ribi_clip(int)