diff --git a/crates/rbuilder/src/live_builder/config.rs b/crates/rbuilder/src/live_builder/config.rs
index bf17e5c0..2d5bfaad 100644
--- a/crates/rbuilder/src/live_builder/config.rs
+++ b/crates/rbuilder/src/live_builder/config.rs
@@ -278,6 +278,10 @@ impl L1Config {
         );
 
         let relays = self.create_relays()?;
+        if relays.is_empty() {
+            eyre::bail!("No relays provided");
+        }
+
         let sink_factory: Box<dyn BuilderSinkFactory> = Box::new(RelaySubmitSinkFactory::new(
             submission_config,
             relays.clone(),