diff --git a/internal/ingress/annotations/auth/main.go b/internal/ingress/annotations/auth/main.go
index 58486c6e8..62d70873e 100644
--- a/internal/ingress/annotations/auth/main.go
+++ b/internal/ingress/annotations/auth/main.go
@@ -197,7 +197,7 @@ func dumpSecretAuthMap(filename string, secret *api.Secret) error {
 	for user, pass := range secret.Data {
 		builder.WriteString(user)
 		builder.WriteString(":")
-		builder.WriteString(string(pass))
+		builder.Write(pass)
 		builder.WriteString("\n")
 	}
 
diff --git a/internal/ingress/annotations/authreq/main.go b/internal/ingress/annotations/authreq/main.go
index 6a8a4611a..2ab389146 100644
--- a/internal/ingress/annotations/authreq/main.go
+++ b/internal/ingress/annotations/authreq/main.go
@@ -143,7 +143,7 @@ func ValidMethod(method string) bool {
 
 // ValidHeader checks is the provided string satisfies the header's name regex
 func ValidHeader(header string) bool {
-	return headerRegexp.Match([]byte(header))
+	return headerRegexp.MatchString(header)
 }
 
 // ValidCacheDuration checks if the provided string is a valid cache duration
@@ -159,13 +159,13 @@ func ValidCacheDuration(duration string) bool {
 		if len(element) == 0 {
 			continue
 		}
-		if statusCodeRegex.Match([]byte(element)) {
+		if statusCodeRegex.MatchString(element) {
 			if seenDuration {
 				return false // code after duration
 			}
 			continue
 		}
-		if durationRegex.Match([]byte(element)) {
+		if durationRegex.MatchString(element) {
 			seenDuration = true
 		}
 	}
diff --git a/internal/net/ssl/ssl.go b/internal/net/ssl/ssl.go
index 05ec10bc5..fdee2f46e 100644
--- a/internal/net/ssl/ssl.go
+++ b/internal/net/ssl/ssl.go
@@ -81,7 +81,7 @@ func CreateSSLCert(cert, key []byte, uid string) (*ingress.SSLCert, error) {
 		}
 	}
 
-	pemCertBuffer.Write([]byte("\n"))
+	pemCertBuffer.WriteString("\n")
 	pemCertBuffer.Write(key)
 
 	pemBlock, _ := pem.Decode(pemCertBuffer.Bytes())
@@ -195,12 +195,12 @@ func StoreSSLCertOnDisk(name string, sslCert *ingress.SSLCert) (string, error) {
 func ConfigureCACertWithCertAndKey(name string, ca []byte, sslCert *ingress.SSLCert) error {
 	var buffer bytes.Buffer
 
-	_, err := buffer.Write([]byte(sslCert.PemCertKey))
+	_, err := buffer.WriteString(sslCert.PemCertKey)
 	if err != nil {
 		return fmt.Errorf("could not append newline to cert file %v: %v", sslCert.CAFileName, err)
 	}
 
-	_, err = buffer.Write([]byte("\n"))
+	_, err = buffer.WriteString("\n")
 	if err != nil {
 		return fmt.Errorf("could not append newline to cert file %v: %v", sslCert.CAFileName, err)
 	}
diff --git a/test/e2e/settings/ocsp/ocsp.go b/test/e2e/settings/ocsp/ocsp.go
index ea444444b..0173f41ac 100644
--- a/test/e2e/settings/ocsp/ocsp.go
+++ b/test/e2e/settings/ocsp/ocsp.go
@@ -68,7 +68,7 @@ var _ = framework.DescribeSetting("OCSP", func() {
 
 		var pemCertBuffer bytes.Buffer
 		pemCertBuffer.Write(leafCert)
-		pemCertBuffer.Write([]byte("\n"))
+		pemCertBuffer.WriteString("\n")
 		pemCertBuffer.Write(intermediateCa)
 
 		f.EnsureSecret(&corev1.Secret{