diff --git a/netio.c b/netio.c
index c955430..d1ba926 100644
--- a/netio.c
+++ b/netio.c
@@ -76,7 +76,7 @@ static void connect_try_next(struct dropbear_progress_connection *c) {
 
 	for (r = c->res_iter; r; r = r->ai_next)
 	{
-		assert(c->sock == -1);
+		dropbear_assert(c->sock == -1);
 
 		c->sock = socket(c->res_iter->ai_family, c->res_iter->ai_socktype, c->res_iter->ai_protocol);
 		if (c->sock < 0) {