diff --git a/pkg/exposer/csi_snapshot.go b/pkg/exposer/csi_snapshot.go
index d20638d7a..6127260c6 100644
--- a/pkg/exposer/csi_snapshot.go
+++ b/pkg/exposer/csi_snapshot.go
@@ -259,7 +259,13 @@ func (e *csiSnapshotExposer) Expose(ctx context.Context, ownerObject corev1api.O
 		return errors.Wrap(err, "error to create backup pod")
 	}
 
-	curLog.WithField("pod name", backupPod.Name).WithField("affinity", csiExposeParam.Affinity).Info("Backup pod is created")
+	curLog = curLog.WithField("pod name", backupPod.Name)
+	if affinity != nil {
+		curLog = curLog.WithField("affinity", *affinity)
+	} else {
+		curLog = curLog.WithField("affinity", "nil")
+	}
+	curLog.Info("Backup pod is created")
 
 	defer func() {
 		if err != nil {