diff --git a/const.go b/const.go
index 197f856..d2b8e3b 100644
--- a/const.go
+++ b/const.go
@@ -186,7 +186,9 @@ const (
 )
 
 // Context authentication options when using TLS.
+type TLSAuthentication int
+
 const (
-    AUTHENTICATION_NONE     = C.GETDNS_AUTHENTICATION_NONE
-    AUTHENTICATION_REQUIRED = C.GETDNS_AUTHENTICATION_REQUIRED
+    AUTHENTICATION_NONE     TLSAuthentication = C.GETDNS_AUTHENTICATION_NONE
+    AUTHENTICATION_REQUIRED                   = C.GETDNS_AUTHENTICATION_REQUIRED
 )
diff --git a/context.go b/context.go
index d087d07..2d215d4 100644
--- a/context.go
+++ b/context.go
@@ -558,17 +558,17 @@ func (c *Context) SetTimeout(newval uint64) error {
     return nil
 }
 
-func (c *Context) TLSAuthentication() (int, error) {
+func (c *Context) TLSAuthentication() (TLSAuthentication, error) {
     var val C.getdns_tls_authentication_t
     rc := ReturnCode(C.getdns_context_get_tls_authentication(c.ctx, &val))
     if rc != RETURN_GOOD {
         return 0, &returnCodeError{rc}
     }
 
-    return int(val), nil
+    return TLSAuthentication(val), nil
 }
 
-func (c *Context) SetTLSAuthentication(newval int) error {
+func (c *Context) SetTLSAuthentication(newval TLSAuthentication) error {
     rc := ReturnCode(C.getdns_context_set_tls_authentication(c.ctx, C.getdns_tls_authentication_t(newval)))
     if rc != RETURN_GOOD {
         return &returnCodeError{rc}