diff --git a/loop.c b/loop.c
index 1bbe620..fb06845 100644
--- a/loop.c
+++ b/loop.c
@@ -619,7 +619,7 @@ void event_incoming (struct bufferevent *bev, short what, void *_arg) {
 
 static void accept_incoming (evutil_socket_t efd, short what, void *arg) {
   vlogprintf (E_WARNING, "Accepting incoming connection\n");
-  unsigned clilen = 0;
+  socklen_t clilen = 0;
   struct sockaddr_in cli_addr;
   int fd = accept (efd, (struct sockaddr *)&cli_addr, &clilen);