diff --git a/scrape/scrape_test.go b/scrape/scrape_test.go
index c30184a1c..ab79f4e2a 100644
--- a/scrape/scrape_test.go
+++ b/scrape/scrape_test.go
@@ -2830,7 +2830,7 @@ func TestScrapeReportLimit(t *testing.T) {
 	var found bool
 	for series.Next() {
 		i := series.At().Iterator()
-		for i.Next() {
+		for i.Next() == chunkenc.ValFloat {
 			_, v := i.At()
 			require.Equal(t, 1.0, v)
 			found = true
diff --git a/storage/remote/codec.go b/storage/remote/codec.go
index 58646f887..c590c346e 100644
--- a/storage/remote/codec.go
+++ b/storage/remote/codec.go
@@ -363,7 +363,7 @@ func (c *concreteSeriesIterator) Seek(t int64) chunkenc.ValueType {
 		c.cur = 0
 	}
 	if c.cur >= len(c.series.samples) {
-		return false
+		return chunkenc.ValNone
 	}
 	// No-op check.
 	if s := c.series.samples[c.cur]; s.Timestamp >= t {
diff --git a/storage/remote/codec_test.go b/storage/remote/codec_test.go
index cd67bbc6b..4d59087e8 100644
--- a/storage/remote/codec_test.go
+++ b/storage/remote/codec_test.go
@@ -236,9 +236,9 @@ func TestConcreteSeriesIterator(t *testing.T) {
 	require.Equal(t, 3., v)
 
 	// Seek beyond the end.
-	require.False(t, it.Seek(5))
+	require.Equal(t, chunkenc.ValNone, it.Seek(5))
 	// And we don't go back. (This exposes issue #10027.)
-	require.False(t, it.Seek(2))
+	require.Equal(t, chunkenc.ValNone, it.Seek(2))
 }
 
 func TestFromQueryResultWithDuplicates(t *testing.T) {
diff --git a/storage/series.go b/storage/series.go
index 4d78c3605..eacd1fa7a 100644
--- a/storage/series.go
+++ b/storage/series.go
@@ -119,7 +119,7 @@ func (it *listSeriesIterator) Seek(t int64) chunkenc.ValueType {
 		it.idx = 0
 	}
 	if it.idx >= it.samples.Len() {
-		return false
+		return chunkenc.ValNone
 	}
 	// No-op check.
 	if s := it.samples.Get(it.idx); s.T() >= t {
diff --git a/storage/series_test.go b/storage/series_test.go
index feef1ec2b..b200a3fc4 100644
--- a/storage/series_test.go
+++ b/storage/series_test.go
@@ -61,7 +61,7 @@ func TestListSeriesIterator(t *testing.T) {
 	require.Equal(t, 3., v)
 
 	// Seek beyond the end.
-	require.False(t, it.Seek(5))
+	require.Equal(t, chunkenc.ValNone, it.Seek(5))
 	// And we don't go back. (This exposes issue #10027.)
-	require.False(t, it.Seek(2))
+	require.Equal(t, chunkenc.ValNone, it.Seek(2))
 }
diff --git a/tsdb/tsdbutil/buffer_test.go b/tsdb/tsdbutil/buffer_test.go
index 443cf900d..263e2681e 100644
--- a/tsdb/tsdbutil/buffer_test.go
+++ b/tsdb/tsdbutil/buffer_test.go
@@ -181,7 +181,7 @@ func (it *listSeriesIterator) Seek(t int64) chunkenc.ValueType {
 		it.idx = 0
 	}
 	if it.idx >= len(it.list) {
-		return false
+		return chunkenc.ValNone
 	}
 	// No-op check.
 	if s := it.list[it.idx]; s.t >= t {