diff --git a/tsdb/db_test.go b/tsdb/db_test.go
index 66dac0f0f8..4b965d2b12 100644
--- a/tsdb/db_test.go
+++ b/tsdb/db_test.go
@@ -981,7 +981,7 @@ func TestTombstoneCleanFail(t *testing.T) {
 		blockDir := createBlock(t, db.Dir(), genSeries(1, 1, 0, 1))
 		block, err := OpenBlock(nil, blockDir, nil)
 		testutil.Ok(t, err)
-		// Add some some fake tombstones to trigger the compaction.
+		// Add some fake tombstones to trigger the compaction.
 		tomb := tombstones.NewMemTombstones()
 		tomb.AddInterval(0, tombstones.Interval{Mint: 0, Maxt: 1})
 		block.tombstones = tomb
diff --git a/tsdb/goversion/goversio_test.go b/tsdb/goversion/goversio_test.go
index 121e56e2ca..9a7486d66f 100644
--- a/tsdb/goversion/goversio_test.go
+++ b/tsdb/goversion/goversio_test.go
@@ -19,7 +19,7 @@ import (
 	_ "github.com/prometheus/prometheus/tsdb/goversion"
 )
 
-// This test is is intentionally blank and exists only so `go test` believes
+// This test is intentionally blank and exists only so `go test` believes
 // there is something to test.
 //
 // The blank import above is actually what invokes the test of this package. If