diff --git a/lib/roken/version-script.map b/lib/roken/version-script.map
index e11bafa04..e895f0d81 100644
--- a/lib/roken/version-script.map
+++ b/lib/roken/version-script.map
@@ -105,6 +105,7 @@ HEIMDAL_ROKEN_1.0 {
 		rk_socket_set_any;
 		rk_socket_set_debug;
 		rk_socket_set_ipv6only;
+		rk_socket_set_nonblocking;
 		rk_socket_set_port;
 		rk_socket_set_portrange;
 		rk_socket_set_reuseaddr;