diff --git a/scrape/helpers_test.go b/scrape/helpers_test.go
index fcef695385..cc4cb088c7 100644
--- a/scrape/helpers_test.go
+++ b/scrape/helpers_test.go
@@ -254,7 +254,7 @@ func (a *collectResultAppender) String() string {
 }
 
 // protoMarshalDelimited marshals a MetricFamily into a delimited
-// Prometheus proto exposition format bytes (known as 'encoding=delimited`)
+// Prometheus proto exposition format bytes (known as `encoding=delimited`)
 //
 // See also https://eli.thegreenplace.net/2011/08/02/length-prefix-framing-for-protocol-buffers
 func protoMarshalDelimited(t *testing.T, mf *dto.MetricFamily) []byte {
diff --git a/tsdb/db_test.go b/tsdb/db_test.go
index 97e23e0c3d..2c9bfe6640 100644
--- a/tsdb/db_test.go
+++ b/tsdb/db_test.go
@@ -2148,7 +2148,7 @@ func TestDB_LabelNames(t *testing.T) {
 		sampleLabels1 [][2]string // For checking head and disk separately.
 		// To test Head+Disk, sampleLabels2 should have
 		// at least 1 unique label name which is not in sampleLabels1.
-		sampleLabels2 [][2]string // // For checking head and disk together.
+		sampleLabels2 [][2]string // For checking head and disk together.
 		exp1          []string    // after adding sampleLabels1.
 		exp2          []string    // after adding sampleLabels1 and sampleLabels2.
 	}{
@@ -9414,7 +9414,7 @@ func TestGenerateCompactionDelay(t *testing.T) {
 type blockedResponseRecorder struct {
 	r *httptest.ResponseRecorder
 
-	// writeblocked is used to block writing until the test wants it to resume.
+	// writeBlocked is used to block writing until the test wants it to resume.
 	writeBlocked chan struct{}
 	// writeStarted is closed by blockedResponseRecorder to signal that writing has started.
 	writeStarted chan struct{}