diff --git a/lib/curl_ntlm_core.h b/lib/curl_ntlm_core.h
index 3b4b8053c..392a1b81d 100644
--- a/lib/curl_ntlm_core.h
+++ b/lib/curl_ntlm_core.h
@@ -48,7 +48,9 @@
 /* Define USE_NTLM2SESSION in order to make the type-3 message include the
    NTLM2Session response message, requires USE_NTRESPONSES defined to 1 and a
    Crypto engine that we have curl_ssl_md5sum() for. */
-#if defined(USE_NTRESPONSES) && !defined(USE_WIN32_CRYPTO)
+#if defined(USE_NTRESPONSES) && \
+  (!defined(USE_WIN32_CRYPTO) || \
+  (defined(USE_SSL) && !defined(CURL_DISABLE_CRYPTO_AUTH)))
 #define USE_NTLM2SESSION
 #endif