diff --git a/src/heap_utils.cc b/src/heap_utils.cc
index 6ce8c1dbdbb945..d5b5afa4d5be9e 100644
--- a/src/heap_utils.cc
+++ b/src/heap_utils.cc
@@ -280,7 +280,6 @@ class HeapSnapshotStream : public AsyncWrap,
 
   int DoShutdown(ShutdownWrap* req_wrap) override {
     UNREACHABLE();
-    return 0;
   }
 
   int DoWrite(WriteWrap* w,
@@ -288,7 +287,6 @@ class HeapSnapshotStream : public AsyncWrap,
               size_t count,
               uv_stream_t* send_handle) override {
     UNREACHABLE();
-    return 0;
   }
 
   bool IsAlive() override { return snapshot_ != nullptr; }