diff --git a/cmd/thanos/downsample.go b/cmd/thanos/downsample.go
index e9e96254cb..2d02f49ac3 100644
--- a/cmd/thanos/downsample.go
+++ b/cmd/thanos/downsample.go
@@ -215,10 +215,10 @@ func downsampleBucket(
 				continue
 			}
 			if err := processDownsampling(ctx, logger, bkt, m, dir, 5*60*1000); err != nil {
-				metrics.downsampleFailures.WithLabelValues(compact.GroupKey(*m))
+				metrics.downsampleFailures.WithLabelValues(compact.GroupKey(*m)).Inc()
 				return errors.Wrap(err, "downsampling to 5 min")
 			}
-			metrics.downsamples.WithLabelValues(compact.GroupKey(*m))
+			metrics.downsamples.WithLabelValues(compact.GroupKey(*m)).Inc()
 
 		case 5 * 60 * 1000:
 			missing := false