diff --git a/tsdb/agent/db.go b/tsdb/agent/db.go
index 1b6df3af0..9697739e0 100644
--- a/tsdb/agent/db.go
+++ b/tsdb/agent/db.go
@@ -1118,7 +1118,7 @@ func (a *appender) logSeries() error {
 	return nil
 }
 
-// mintTs returns the minimum timestamp that a sample can have
+// minValidTime returns the minimum timestamp that a sample can have
 // and is needed for preventing underflow.
 func (a *appender) minValidTime(lastTs int64) int64 {
 	if lastTs < math.MinInt64+a.opts.OutOfOrderTimeWindow {
diff --git a/tsdb/chunks/head_chunks_test.go b/tsdb/chunks/head_chunks_test.go
index 4a4d89e81..b2aa39c3b 100644
--- a/tsdb/chunks/head_chunks_test.go
+++ b/tsdb/chunks/head_chunks_test.go
@@ -408,7 +408,7 @@ func TestChunkDiskMapper_Truncate_WriteQueueRaceCondition(t *testing.T) {
 	wg.Wait()
 }
 
-// TestHeadReadWriter_TruncateAfterIterateChunksError tests for
+// TestHeadReadWriter_TruncateAfterFailedIterateChunks tests for
 // https://github.com/prometheus/prometheus/issues/7753
 func TestHeadReadWriter_TruncateAfterFailedIterateChunks(t *testing.T) {
 	hrw := createChunkDiskMapper(t, "")