diff --git a/tdutils/td/utils/HttpUrl.h b/tdutils/td/utils/HttpUrl.h
index bf7536477..bb2597e9f 100644
--- a/tdutils/td/utils/HttpUrl.h
+++ b/tdutils/td/utils/HttpUrl.h
@@ -24,6 +24,16 @@ class HttpUrl {
   string query_;
 
   string get_url() const;
+
+  HttpUrl(Protocol protocol, string userinfo, string host, bool is_ipv6, int specified_port, int port, string query)
+      : protocol_(protocol)
+      , userinfo_(std::move(userinfo))
+      , host_(std::move(host))
+      , is_ipv6_(is_ipv6)
+      , specified_port_(specified_port)
+      , port_(port)
+      , query_(std::move(query)) {
+  }
 };
 
 // TODO Slice instead of MutableSlice
diff --git a/tdutils/td/utils/Variant.h b/tdutils/td/utils/Variant.h
index 9b6e0561c..3907d0cbc 100644
--- a/tdutils/td/utils/Variant.h
+++ b/tdutils/td/utils/Variant.h
@@ -170,7 +170,7 @@ class Variant {
 
   template <class T>
   void init_empty(T &&t) {
-    CHECK(offset_ == npos);
+    CHECK(offset_ == npos) << offset_ << ' ' << typeid(T).name() << ' ' << typeid(*this).name();
     offset_ = offset<T>();
     new (&get<T>()) std::decay_t<T>(std::forward<T>(t));
   }