diff --git a/prefab/conn_blocks/tcp_connblock.c b/prefab/conn_blocks/tcp_connblock.c
index c0d1c3d..b8d5817 100644
--- a/prefab/conn_blocks/tcp_connblock.c
+++ b/prefab/conn_blocks/tcp_connblock.c
@@ -265,7 +265,7 @@ int tcp_receive_segment_cb(const Pckt *pckt, PcktSieveLayerTag tag) {
         cbdt_release(E.cbdt, tcps->d); // release descriptor
     }
 
-    return 0; // TODO
+    return ret;
 }
 
 void tcp_bind(cbd d, ip4_addr remoteAddr, uint16_t remotePort) {