diff --git a/connection.h b/connection.h
index 4e5b811..a4429a5 100644
--- a/connection.h
+++ b/connection.h
@@ -31,7 +31,6 @@ class connection : public std::enable_shared_from_this<connection>, private boos
   bool has_closed() const { return has_closed_; }
 
   void response(const char* data, size_t len) {
-    assert(message_[1].size() >= len);
     message_[0] = boost::asio::buffer(&len, sizeof(int32_t));
     message_[1] = boost::asio::buffer((char*)data, len);
     reset_timer();