diff --git a/process/dataPool.go b/process/dataPool.go
index 57dd4a8..c61c703 100644
--- a/process/dataPool.go
+++ b/process/dataPool.go
@@ -239,9 +239,19 @@ func (bp *dataPool) getCheckpointData(checkpointKey string) (*data.BlockCheckpoi
 	return checkpoint, nil
 }
 
+func deepCopyMap(originalMap map[uint32]uint64) map[uint32]uint64 {
+	newMap := make(map[uint32]uint64)
+
+	for key, value := range originalMap {
+		newMap[key] = value
+	}
+
+	return newMap
+}
+
 func (bp *dataPool) saveLastSoftCheckpoint() error {
 	bp.mutMap.RLock()
-	softCheckpointMap := bp.softCheckpointMap
+	softCheckpointMap := deepCopyMap(bp.softCheckpointMap)
 	bp.mutMap.RUnlock()
 
 	softCheckpoint := &data.BlockCheckpoint{}
diff --git a/process/publisherHandler.go b/process/publisherHandler.go
index 9a74d5d..d5fe0b6 100644
--- a/process/publisherHandler.go
+++ b/process/publisherHandler.go
@@ -156,7 +156,7 @@ func (ph *publisherHandler) updatePublishCheckpoint() {
 
 func (ph *publisherHandler) handleLastCheckpointOnInit() error {
 	if ph.resetCheckpoints {
-		log.Debug("did not checked last publisher checkpoint on init")
+		log.Debug("did not check last publisher checkpoint on init")
 		return nil
 	}