diff --git a/src/include/lwip/opt.h b/src/include/lwip/opt.h
index 5ea220e2..54e25580 100644
--- a/src/include/lwip/opt.h
+++ b/src/include/lwip/opt.h
@@ -1419,7 +1419,7 @@
  * netif is available, loopback traffic uses this netif.
  */
 #ifndef LWIP_HAVE_LOOPIF
-#define LWIP_HAVE_LOOPIF                0
+#define LWIP_HAVE_LOOPIF                LWIP_NETIF_LOOPBACK
 #endif
 
 /*