diff --git a/pkg/services/tree/service.go b/pkg/services/tree/service.go
index edea450f..7ab8fd13 100644
--- a/pkg/services/tree/service.go
+++ b/pkg/services/tree/service.go
@@ -531,9 +531,13 @@ func (s *Service) GetOpLog(req *GetOpLogRequest, srv TreeService_GetOpLogServer)
 	}
 
 	h := b.GetHeight()
+	lastHeight, err := s.forest.TreeHeight(cid, b.GetTreeId())
+	if err != nil {
+		return err
+	}
 	for {
 		lm, err := s.forest.TreeGetOpLog(cid, b.GetTreeId(), h)
-		if err != nil || lm.Time == 0 {
+		if err != nil || lm.Time == 0 || lastHeight < lm.Time {
 			return err
 		}