diff --git a/pybtc/connector/utxo.py b/pybtc/connector/utxo.py
index aed68e5..4ea1de9 100644
--- a/pybtc/connector/utxo.py
+++ b/pybtc/connector/utxo.py
@@ -82,7 +82,7 @@ class UTXO():
             if not checkpoint_found:
                 for i in reversed(self.pending_saved):
                     self.cached.append({i: self.pending_saved[i]})
-                self.log.critical("checkpoint not found " + str(self.checkpoints))
+                self.log.critical("checkpoint not found " +str(lb) +" > "+ str(self.checkpoints))
                 return
             # self.log.critical("checkpoints " + str(self.checkpoints) + " > " + str(checkpoint))
             # self.log.critical("found checkpoint " + str(lb) + "  len " + str(len(utxo)) + " cached " + str(len(self.cached)) )