diff --git a/hphp/third_party/folly/folly/dynamic-inl.h b/hphp/third_party/folly/folly/dynamic-inl.h
index 92cd67ef7..ae38798b2 100644
--- a/hphp/third_party/folly/folly/dynamic-inl.h
+++ b/hphp/third_party/folly/folly/dynamic-inl.h
@@ -543,8 +543,7 @@ inline dynamic& dynamic::at(dynamic const& idx) {
     return (*parray)[idx.asInt()];
   }
 
-  auto* pobj = get_nothrow<ObjectImpl>();
-  assert(pobj);
+  assert(get_nothrow<ObjectImpl>());
   auto it = find(idx);
   if (it == items().end()) {
     throw std::out_of_range(to<std::string>(