diff --git a/nexus/test-utils/src/lib.rs b/nexus/test-utils/src/lib.rs
index 605cdc3796d..ea46f2d017a 100644
--- a/nexus/test-utils/src/lib.rs
+++ b/nexus/test-utils/src/lib.rs
@@ -510,8 +510,6 @@ impl<'a, N: NexusServer> ControlPlaneTestContextBuilder<'a, N> {
             mgs_config,
             &sp_sim_config,
             mgs_addr,
-            // TODO(eliza): pass the nexus address here...
-            Default::default(),
         )
         .await;
         self.gateway.insert(switch_location, gateway);