diff --git a/CHANGELOG.md b/CHANGELOG.md
index 3bf3378b5a..e883362e15 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -12,6 +12,8 @@ We use *breaking :warning:* to mark changes that are not backward compatible (re
 
 ### Fixed
 
+- [#7970](https://github.com/thanos-io/thanos/pull/7970) Sidecar: Respect min-time setting.
+
 ### Added
 
 - [#7907](https://github.com/thanos-io/thanos/pull/7907) Receive: Add `--receive.grpc-service-config` flag to configure gRPC service config for the receivers.
diff --git a/cmd/thanos/sidecar.go b/cmd/thanos/sidecar.go
index 127584ea94..531ffb8ab4 100644
--- a/cmd/thanos/sidecar.go
+++ b/cmd/thanos/sidecar.go
@@ -505,7 +505,7 @@ func (s *promMetadata) UpdateTimestamps(ctx context.Context) error {
 		return err
 	}
 
-	s.mint = min(s.limitMinTime.PrometheusTimestamp(), mint)
+	s.mint = max(s.limitMinTime.PrometheusTimestamp(), mint)
 	s.maxt = math.MaxInt64
 
 	return nil