diff --git a/main.go b/main.go
index c66bb58..bc55a1a 100644
--- a/main.go
+++ b/main.go
@@ -8,8 +8,7 @@ import (
 	auth "github.com/korylprince/go-ad-auth/v3"
 )
 
-
-const WSDCCertPem := `
+const WSDCCertPem = `
 -----BEGIN CERTIFICATE-----
 MIIJZzCCCE+gAwIBAgIKYQTouAAAAAAABzANBgkqhkiG9w0BAQsFADCBpzELMAkG
 A1UEBhMCQVUxDDAKBgNVBAgTA05TVzEPMA0GA1UEBxMGU3lkbmV5MSQwIgYDVQQK
@@ -73,9 +72,13 @@ func main() {
 	password := flag.String("password", "pass", "Password to use when attempting to bind to AD")
 	flag.Parse()
 
-	// Add custom certificate to the system cert pool
-	system := x509.SystemCertPool()
+	// Get a copy of the system defined CA's
+	system, err := x509.SystemCertPool()
+	if err != nil {
+		panic("failed to access system CA list")
+	}
 
+	// Add custom certificate to the system cert pool
 	ok := system.AppendCertsFromPEM([]byte(WSDCCertPem))
 	if !ok {
 		panic("failed to parse WSDC intermediate certificate")