diff --git a/model/histogram/float_histogram.go b/model/histogram/float_histogram.go
index e090c2be2..64c7b797a 100644
--- a/model/histogram/float_histogram.go
+++ b/model/histogram/float_histogram.go
@@ -318,7 +318,6 @@ func (h *FloatHistogram) Sub(other *FloatHistogram) *FloatHistogram {
 		hPositiveSpans, hPositiveBuckets = reduceResolution(hPositiveSpans, hPositiveBuckets, h.Schema, other.Schema, false, true)
 		hNegativeSpans, hNegativeBuckets = reduceResolution(hNegativeSpans, hNegativeBuckets, h.Schema, other.Schema, false, true)
 		h.Schema = other.Schema
-
 	case other.Schema > h.Schema:
 		otherPositiveSpans, otherPositiveBuckets = reduceResolution(otherPositiveSpans, otherPositiveBuckets, other.Schema, h.Schema, false, false)
 		otherNegativeSpans, otherNegativeBuckets = reduceResolution(otherNegativeSpans, otherNegativeBuckets, other.Schema, h.Schema, false, false)
diff --git a/tsdb/chunks/chunks.go b/tsdb/chunks/chunks.go
index f22285a0c..2c6db3637 100644
--- a/tsdb/chunks/chunks.go
+++ b/tsdb/chunks/chunks.go
@@ -671,7 +671,7 @@ func (s *Reader) Size() int64 {
 	return s.size
 }
 
-// Chunk returns a chunk from a given reference.
+// ChunkOrIterable returns a chunk from a given reference.
 func (s *Reader) ChunkOrIterable(meta Meta) (chunkenc.Chunk, chunkenc.Iterable, error) {
 	sgmIndex, chkStart := BlockChunkRef(meta.Ref).Unpack()