diff --git a/migration-tcp.c b/migration-tcp.c
index a2272a72878eb6c2aee1ba95e94695ad333d3e3d..698cd05d97a98cea5ade430c6236da840eaaf74b 100644
--- a/migration-tcp.c
+++ b/migration-tcp.c
@@ -173,7 +173,7 @@ static void tcp_wait_for_connect(void *opaque)
 {
     FdMigrationState *s = opaque;
     int val, ret;
-    int valsize = sizeof(val);
+    socklen_t valsize = sizeof(val);
 
     dprintf("connect completed\n");
     do {