diff --git a/src/or/connection.c b/src/or/connection.c
index ad5f9a1451..1be4c45dd7 100644
--- a/src/or/connection.c
+++ b/src/or/connection.c
@@ -965,6 +965,7 @@ make_socket_reuseable(tor_socket_t sock)
 {
 #ifdef _WIN32
   (void) sock;
+  return 0;
 #else
   int one=1;