diff --git a/htsclient.c b/htsclient.c
index f96c0750..b52f02f7 100644
--- a/htsclient.c
+++ b/htsclient.c
@@ -795,7 +795,7 @@ static void
 client_connect_callback(int events, void *opaque, int fd)
 {
   struct sockaddr_in from;
-  size_t socklen = sizeof(struct sockaddr_in);
+  socklen_t socklen = sizeof(struct sockaddr_in);
   int newfd;
   int val;
   client_t *c;