diff --git a/tdutils/td/utils/TimedStat.h b/tdutils/td/utils/TimedStat.h
index 3ab7e0c4..fc419747 100644
--- a/tdutils/td/utils/TimedStat.h
+++ b/tdutils/td/utils/TimedStat.h
@@ -46,8 +46,11 @@ class TimedStat {
   StatT next_;
   double next_timestamp_;
 
-  void update(double now) {
-    CHECK(now >= next_timestamp_);
+  void update(double &now) {
+    if (now < next_timestamp_) {
+      CHECK(now >= next_timestamp_ * (1 - 1e-14)) << now << " " << next_timestamp_;
+      now = next_timestamp_;
+    }
     if (duration_ == 0) {
       return;
     }