diff --git a/ports/curl/portfile.cmake b/ports/curl/portfile.cmake
index d397525c6d..f45ee8016e 100644
--- a/ports/curl/portfile.cmake
+++ b/ports/curl/portfile.cmake
@@ -28,6 +28,7 @@ set(USE_OPENSSL ON)
 if(CURL_USE_WINSSL)
     set(USE_OPENSSL OFF)
     set(USE_WINSSL ON)
+    set(HTTP2_OPTIONS) ## disable HTTP2 when CURL_USE_WINSSL
 endif()
 
 set(UWP_OPTIONS)