diff --git a/src/unix/stream.c b/src/unix/stream.c
index 6d1144f6..5f42c344 100644
--- a/src/unix/stream.c
+++ b/src/unix/stream.c
@@ -1443,4 +1443,6 @@ void uv__stream_close(uv_stream_t* handle) {
 
 int uv_stream_set_blocking(uv_stream_t* handle, int blocking) {
   assert(0 && "implement me");
+  abort();
+  return 0;
 }