diff --git a/cas/apiv1/extension.go b/cas/apiv1/extension.go
index de341fbb..bbe2525a 100644
--- a/cas/apiv1/extension.go
+++ b/cas/apiv1/extension.go
@@ -13,7 +13,7 @@ var (
 	oidStepCertificateAuthority = append(asn1.ObjectIdentifier(nil), append(oidStepRoot, 2)...)
 )
 
-// CertificateAuthorityExtension is type used to encode the certificate
+// CertificateAuthorityExtension type is used to encode the certificate
 // authority extension.
 type CertificateAuthorityExtension struct {
 	Type          string
diff --git a/db/db.go b/db/db.go
index 77db7e97..2643e577 100644
--- a/db/db.go
+++ b/db/db.go
@@ -190,11 +190,11 @@ func (db *DB) RevokeSSH(rci *RevokedCertificateInfo) error {
 
 // GetCertificate retrieves a certificate by the serial number.
 func (db *DB) GetCertificate(serialNumber string) (*x509.Certificate, error) {
-	ans1Data, err := db.Get(certsTable, []byte(serialNumber))
+	asn1Data, err := db.Get(certsTable, []byte(serialNumber))
 	if err != nil {
 		return nil, errors.Wrap(err, "database Get error")
 	}
-	cert, err := x509.ParseCertificate(ans1Data)
+	cert, err := x509.ParseCertificate(asn1Data)
 	if err != nil {
 		return nil, errors.Wrapf(err, "error parsing certificate with serial number %s", serialNumber)
 	}