diff --git a/drawing/drawing.pde b/drawing/drawing.pde
index b00a0fa..1336647 100644
--- a/drawing/drawing.pde
+++ b/drawing/drawing.pde
@@ -120,7 +120,7 @@ void mouse_over_BUTTON(){
 void mouseClicked(){
  if(check_mouse_over_button(rectX1,rectY1,rectheight,rectwidth)){
   //draw edges should be implemented by pressing button.
-    if (G.V.size()<=3) throw new RuntimeException("Requires at least 5 points"); 
+    if (G.V.size()<=3) throw new RuntimeException("Requires at least 4 points"); 
     for(int i=0;i<G.V.size();i++){
      do{
          stroke(0,0,255);