diff --git a/src/derive/stages/batches.rs b/src/derive/stages/batches.rs
index 2cce5f0f..8c1c36db 100644
--- a/src/derive/stages/batches.rs
+++ b/src/derive/stages/batches.rs
@@ -257,8 +257,11 @@ where
         } else if start_epoch_num == epoch.number + 1 {
             next_epoch
         } else {
-            tracing::warn!("invalid batch origin epoch number");
-            println!("{}, {}", batch.l1_origin_num, epoch.number);
+            tracing::warn!(
+                "invalid batch origin epoch number: batch={}, current={}",
+                start_epoch_num,
+                epoch.number
+            );
             return BatchStatus::Drop;
         };
 
diff --git a/src/derive/stages/span_batch.rs b/src/derive/stages/span_batch.rs
index c3838d4f..c830e5a8 100644
--- a/src/derive/stages/span_batch.rs
+++ b/src/derive/stages/span_batch.rs
@@ -470,7 +470,7 @@ mod test {
 
         assert_eq!(batch.l1_inclusion_block, 0);
 
-        println!("{:?}", batch.origin_bits);
+        println!("starting epoch: {}", batch.start_epoch_num());
 
         let inputs = batch.block_inputs(&config);
         inputs.iter().for_each(|input| {