diff --git a/lib/httputils/tls.go b/lib/httputils/tls.go
index 3a1b042fb1..35f32b89c7 100644
--- a/lib/httputils/tls.go
+++ b/lib/httputils/tls.go
@@ -11,12 +11,12 @@ import (
 
 // Transport creates http.Transport object based on provided URL.
 // Returns Transport with TLS configuration if URL contains `https` prefix
-func Transport(URL, certFile, keyFile, CAFile, serverName string, insecureSkipVerify bool) (*http.Transport, error) {
+func Transport(URL, certFile, keyFile, caFile, serverName string, insecureSkipVerify bool) (*http.Transport, error) {
 	t := http.DefaultTransport.(*http.Transport).Clone()
 	if !strings.HasPrefix(URL, "https") {
 		return t, nil
 	}
-	tlsCfg, err := TLSConfig(certFile, keyFile, CAFile, serverName, insecureSkipVerify)
+	tlsCfg, err := TLSConfig(certFile, keyFile, caFile, serverName, insecureSkipVerify)
 	if err != nil {
 		return nil, err
 	}
@@ -25,7 +25,7 @@ func Transport(URL, certFile, keyFile, CAFile, serverName string, insecureSkipVe
 }
 
 // TLSConfig creates tls.Config object from provided arguments
-func TLSConfig(certFile, keyFile, CAFile, serverName string, insecureSkipVerify bool) (*tls.Config, error) {
+func TLSConfig(certFile, keyFile, caFile, serverName string, insecureSkipVerify bool) (*tls.Config, error) {
 	var certs []tls.Certificate
 	if certFile != "" {
 		cert, err := tls.LoadX509KeyPair(certFile, keyFile)
@@ -37,15 +37,15 @@ func TLSConfig(certFile, keyFile, CAFile, serverName string, insecureSkipVerify
 	}
 
 	var rootCAs *x509.CertPool
-	if CAFile != "" {
-		pem, err := os.ReadFile(CAFile)
+	if caFile != "" {
+		pem, err := os.ReadFile(caFile)
 		if err != nil {
-			return nil, fmt.Errorf("cannot read `ca_file` %q: %w", CAFile, err)
+			return nil, fmt.Errorf("cannot read `ca_file` %q: %w", caFile, err)
 		}
 
 		rootCAs = x509.NewCertPool()
 		if !rootCAs.AppendCertsFromPEM(pem) {
-			return nil, fmt.Errorf("cannot parse data from `ca_file` %q", CAFile)
+			return nil, fmt.Errorf("cannot parse data from `ca_file` %q", caFile)
 		}
 	}