diff --git a/storage/buffer.go b/storage/buffer.go
index 55a0c604e..fe89ce200 100644
--- a/storage/buffer.go
+++ b/storage/buffer.go
@@ -83,7 +83,7 @@ func (b *BufferedSeriesIterator) Seek(t int64) bool {
 	t0 := t - b.buf.delta
 
 	// If the delta would cause us to seek backwards, preserve the buffer
-	// and just continue regular advancment while filling the buffer on the way.
+	// and just continue regular advancement while filling the buffer on the way.
 	if t0 > b.lastTime {
 		b.buf.reset()