diff --git a/src/drawing/drawing.rs b/src/drawing/drawing.rs
index d06ffbc..0f9423d 100644
--- a/src/drawing/drawing.rs
+++ b/src/drawing/drawing.rs
@@ -78,9 +78,9 @@ pub struct Drawing<CW: Copy, R: RulesTrait> {
 }
 
 impl<CW: Copy, R: RulesTrait> Drawing<CW, R> {
-    pub fn new(rules: R) -> Self {
+    pub fn new(rules: R, layer_count: usize) -> Self {
         Self {
-            geometry_with_rtree: GeometryWithRtree::new(2),
+            geometry_with_rtree: GeometryWithRtree::new(layer_count),
             rules,
         }
     }
diff --git a/src/dsn/design.rs b/src/dsn/design.rs
index 6b041f3..b7714da 100644
--- a/src/dsn/design.rs
+++ b/src/dsn/design.rs
@@ -124,8 +124,11 @@ impl DsnDesign {
     }
 
     pub fn make_board(&self) -> Board<DsnMesadata> {
-        let rules = DsnMesadata::from_pcb(&self.pcb);
-        let mut board = Board::new(Layout::new(Drawing::new(rules)));
+        let mesadata = DsnMesadata::from_pcb(&self.pcb);
+        let mut board = Board::new(Layout::new(Drawing::new(
+            mesadata,
+            self.pcb.structure.layer_vec.len(),
+        )));
 
         // mapping of pin -> net prepared for adding pins
         let pin_nets = HashMap::<String, usize>::from_iter(