diff --git a/tests/common/mod.rs b/tests/common/mod.rs
index 2b778df..21bbc07 100644
--- a/tests/common/mod.rs
+++ b/tests/common/mod.rs
@@ -174,7 +174,7 @@ pub fn assert_that_all_single_layer_groundless_ratlines_are_autorouted(
     autorouter: &mut Autorouter<impl AccessMesadata>,
     layername: &str,
 ) {
-    let conncomps = ConncompsWithPrincipalLayer::new(autorouter.board().layout());
+    let conncomps = ConncompsWithPrincipalLayer::new(autorouter.board(), 0);
 
     for ratline in autorouter.ratsnest().graph().edge_indices() {
         let (origin_dot, destination_dot) = ratline.ref_(autorouter).endpoint_dots();