diff --git a/src/core/core-url.c b/src/core/core-url.c
index f3d432ef1..a27585695 100644
--- a/src/core/core-url.c
+++ b/src/core/core-url.c
@@ -146,8 +146,10 @@ struct t_url_constant url_auth[] =
 
 struct t_url_constant url_authtype[] =
 {
+#if LIBCURL_VERSION_NUM < 0x081600 /* < 8.22.0 */
     URL_DEF_CONST(_TLSAUTH, NONE),
     URL_DEF_CONST(_TLSAUTH, SRP),
+#endif
     { NULL, 0 },
 };
 
@@ -443,9 +445,11 @@ struct t_url_option url_options[] =
     URL_DEF_OPTION(PASSWORD, STRING, NULL),
     URL_DEF_OPTION(PROXYUSERNAME, STRING, NULL),
     URL_DEF_OPTION(PROXYPASSWORD, STRING, NULL),
+#if LIBCURL_VERSION_NUM < 0x081600 /* < 8.22.0 */
     URL_DEF_OPTION(TLSAUTH_TYPE, MASK, url_authtype),
     URL_DEF_OPTION(TLSAUTH_USERNAME, STRING, NULL),
     URL_DEF_OPTION(TLSAUTH_PASSWORD, STRING, NULL),
+#endif
 #if LIBCURL_VERSION_NUM >= 0x074200 /* 7.66.0 */
     URL_DEF_OPTION(SASL_AUTHZID, STRING, NULL),
 #endif
@@ -688,6 +692,8 @@ struct t_url_option url_options[] =
     URL_DEF_OPTION(PROXY_SSL_OPTIONS, LONG, url_ssl_options),
     URL_DEF_OPTION(PROXY_SSL_VERIFYHOST, LONG, NULL),
     URL_DEF_OPTION(PROXY_SSL_VERIFYPEER, LONG, NULL),
+#endif
+#if LIBCURL_VERSION_NUM >= 0x073400 && LIBCURL_VERSION_NUM < 0x081600 /* 7.52.0 < 8.22.0 */
     URL_DEF_OPTION(PROXY_TLSAUTH_PASSWORD, STRING, NULL),
     URL_DEF_OPTION(PROXY_TLSAUTH_TYPE, STRING, NULL),
     URL_DEF_OPTION(PROXY_TLSAUTH_USERNAME, STRING, NULL),