diff --git a/flexidag/src/blockdag.rs b/flexidag/src/blockdag.rs
index cc5ea909b7..570c3c944f 100644
--- a/flexidag/src/blockdag.rs
+++ b/flexidag/src/blockdag.rs
@@ -581,6 +581,7 @@ impl BlockDAG {
         if merge_depth_root == Hash::zero() {
             return anyhow::Ok((parents, ghostdata));
         }
+        info!("merge depth root: {:?}", merge_depth_root);
         let mut kosherizing_blues: Option<Vec<Hash>> = None;
         let mut bad_reds = Vec::new();
 
diff --git a/sync/src/block_connector/block_connector_service.rs b/sync/src/block_connector/block_connector_service.rs
index d35b864372..f82a07ef83 100644
--- a/sync/src/block_connector/block_connector_service.rs
+++ b/sync/src/block_connector/block_connector_service.rs
@@ -424,12 +424,17 @@ where
             bail!("failed to get the blue blocks from the DAG");
         }
 
+        info!("try to remove the red blocks when mining, tips: {:?} and ghostdata: {:?}, pruning point: {:?}", tips, ghostdata, pruning_point);
         (tips, ghostdata) = dag.remove_bounded_merge_breaking_parents(
             tips,
             ghostdata,
             pruning_point,
             G_MERGE_DEPTH,
         )?;
+        info!(
+            "after removing the bounded merge breaking parents, tips: {:?} and ghostdata: {:?}",
+            tips, ghostdata
+        );
 
         let selected_parent = ghostdata.selected_parent;
         let time_service = self.config.net().time_service();