diff --git a/src/context.c b/src/context.c
index 0dd7ec79..8ddf2c9a 100644
--- a/src/context.c
+++ b/src/context.c
@@ -1280,17 +1280,21 @@ getdns_context_request_count_changed(getdns_context *context)
 		DEBUG_SCHED("gc_request_count_changed "
 		    "-> ub schedule(el_ev = %p, el_ev->ev = %p)\n",
 		    &context->ub_event, context->ub_event.ev);
+#ifndef USE_WINSOCK
 		context->extension->vmt->schedule(
 		    context->extension, ub_fd(context->unbound_ctx),
 		    TIMEOUT_FOREVER, &context->ub_event);
+#endif
 	}
 	else if (context->ub_event.ev) /* Only test if count == 0! */ {
 		DEBUG_SCHED("gc_request_count_changed "
 		    "-> ub clear(el_ev = %p, el_ev->ev = %p)\n",
 		    &context->ub_event, context->ub_event.ev);
 
+#ifndef USE_WINSOCK
 		context->extension->vmt->clear(
 		    context->extension, &context->ub_event);
+#endif
 	}
 }
 
diff --git a/src/sync.c b/src/sync.c
index cfc43df6..b6524d02 100644
--- a/src/sync.c
+++ b/src/sync.c
@@ -68,7 +68,7 @@ getdns_sync_loop_init(getdns_context *context, getdns_sync_loop *loop)
 
 	_getdns_default_eventloop_init(&loop->loop);
 
-#ifdef HAVE_LIBUNBOUND
+#if defined(HAVE_LIBUNBOUND) && !defined(USE_WINSOCK)
 	loop->ub_event.userarg    = loop->context;
 	loop->ub_event.read_cb    = _getdns_context_ub_read_cb;
 	loop->ub_event.write_cb   = NULL;