diff --git a/lib/easy.c b/lib/easy.c
index 88159f4744..93e8acc8df 100644
--- a/lib/easy.c
+++ b/lib/easy.c
@@ -944,7 +944,7 @@ struct Curl_easy *curl_easy_duphandle(struct Curl_easy *data)
       goto fail;
   }
 
-#ifdef USE_ALTSVC
+#ifndef CURL_DISABLE_ALTSVC
   if(data->asi) {
     outcurl->asi = Curl_altsvc_init();
     if(!outcurl->asi)