diff --git a/src/snapshot/code-serializer.cc b/src/snapshot/code-serializer.cc
index 86a91643d2..511f111752 100644
--- a/src/snapshot/code-serializer.cc
+++ b/src/snapshot/code-serializer.cc
@@ -104,6 +104,12 @@ void CodeSerializer::SerializeObject(HeapObject* obj, HowToCode how_to_code,
     return SerializeObject(isolate()->heap()->undefined_value(), how_to_code,
                            where_to_point, skip);
   }
+
+  if (obj->IsScript()) {
+    // Wrapper object is a context-dependent JSValue. Reset it here.
+    Script::cast(obj)->set_wrapper(isolate()->heap()->undefined_value());
+  }
+
   // Past this point we should not see any (context-specific) maps anymore.
   CHECK(!obj->IsMap());
   // There should be no references to the global object embedded.
diff --git a/test/mjsunit/regress/wasm/regression-674447.js b/test/mjsunit/regress/wasm/regression-674447.js
new file mode 100644
index 0000000000..228b038334
--- /dev/null
+++ b/test/mjsunit/regress/wasm/regression-674447.js
@@ -0,0 +1,10 @@
+// Copyright 2016 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Flags: --validate-asm --cache=code
+
+(function() {
+  "use asm";
+  return function f() {}
+})();