diff --git a/crates/signer/src/service.rs b/crates/signer/src/service.rs
index 86bdfc1c..e18b90c5 100644
--- a/crates/signer/src/service.rs
+++ b/crates/signer/src/service.rs
@@ -45,7 +45,10 @@ impl SigningService {
             warn!("Signing service was started but no module is registered. Exiting");
             return Ok(());
         } else {
-            info!(modules =? config.jwts.left_values(), port =? config.server_port, "Starting signing service");
+            let module_ids: Vec<String> =
+                config.jwts.left_values().cloned().map(Into::into).collect();
+
+            info!(modules =? module_ids, port =? config.server_port, "Starting signing service");
         }
 
         let mut manager = SigningManager::new(config.chain);