diff --git a/td/generate/tl_writer_c.h b/td/generate/tl_writer_c.h
index 2e1ff4a7d..9402bae72 100644
--- a/td/generate/tl_writer_c.h
+++ b/td/generate/tl_writer_c.h
@@ -346,7 +346,8 @@ class TlWriterCCommon : public tl::TL_writer {
               (fields_num ? "" : "void");
     return ss.str();
   }
-  std::string gen_constructor_parameter(int field_num, const tl::arg &a, bool is_default) const override {
+  std::string gen_constructor_parameter(int field_num, const std::string &class_name, const tl::arg &a,
+                                        bool is_default) const override {
     if (!is_default || is_header_ == -1) {
       return "";
     }
@@ -356,7 +357,8 @@ class TlWriterCCommon : public tl::TL_writer {
     ss << field_type << gen_field_name(a.name);
     return ss.str();
   }
-  std::string gen_constructor_field_init(int field_num, const tl::arg &a, bool is_default) const override {
+  std::string gen_constructor_field_init(int field_num, const std::string &class_name, const tl::arg &a,
+                                         bool is_default) const override {
     return "";
   }
   std::string gen_constructor_end(const tl::tl_combinator *t, int fields_num, bool is_default) const override {
diff --git a/td/generate/tl_writer_cpp.cpp b/td/generate/tl_writer_cpp.cpp
index a9589c217..56a682c64 100644
--- a/td/generate/tl_writer_cpp.cpp
+++ b/td/generate/tl_writer_cpp.cpp
@@ -636,7 +636,8 @@ std::string TD_TL_writer_cpp::gen_constructor_begin(int fields_num, const std::s
   return "\n" + class_name + "::" + class_name + "(";
 }
 
-std::string TD_TL_writer_cpp::gen_constructor_field_init(int field_num, const tl::arg &a, bool is_default) const {
+std::string TD_TL_writer_cpp::gen_constructor_field_init(int field_num, const std::string &class_name, const tl::arg &a,
+                                                         bool is_default) const {
   std::string field_type = gen_field_type(a);
   if (field_type.empty()) {
     return "";
diff --git a/td/generate/tl_writer_cpp.h b/td/generate/tl_writer_cpp.h
index 7d3d7ef32..eb64d18a8 100644
--- a/td/generate/tl_writer_cpp.h
+++ b/td/generate/tl_writer_cpp.h
@@ -97,7 +97,8 @@ class TD_TL_writer_cpp : public TD_TL_writer {
   std::string gen_fetch_switch_end() const override;
 
   std::string gen_constructor_begin(int fields_num, const std::string &class_name, bool is_default) const override;
-  std::string gen_constructor_field_init(int field_num, const tl::arg &a, bool is_default) const override;
+  std::string gen_constructor_field_init(int field_num, const std::string &class_name, const tl::arg &a,
+                                         bool is_default) const override;
   std::string gen_constructor_end(const tl::tl_combinator *t, int fields_num, bool is_default) const override;
 };
 
diff --git a/td/generate/tl_writer_h.cpp b/td/generate/tl_writer_h.cpp
index 4d83022b3..49eaf4982 100644
--- a/td/generate/tl_writer_h.cpp
+++ b/td/generate/tl_writer_h.cpp
@@ -338,7 +338,8 @@ std::string TD_TL_writer_h::gen_constructor_begin(int fields_num, const std::str
          std::string(fields_num == 1 ? "explicit " : "") + class_name + "(";
 }
 
-std::string TD_TL_writer_h::gen_constructor_field_init(int field_num, const tl::arg &a, bool is_default) const {
+std::string TD_TL_writer_h::gen_constructor_field_init(int field_num, const std::string &class_name, const tl::arg &a,
+                                                       bool is_default) const {
   return "";
 }
 
diff --git a/td/generate/tl_writer_h.h b/td/generate/tl_writer_h.h
index cad902504..e763ea47e 100644
--- a/td/generate/tl_writer_h.h
+++ b/td/generate/tl_writer_h.h
@@ -83,7 +83,8 @@ class TD_TL_writer_h : public TD_TL_writer {
   std::string gen_fetch_switch_end() const override;
 
   std::string gen_constructor_begin(int fields_num, const std::string &class_name, bool is_default) const override;
-  std::string gen_constructor_field_init(int field_num, const tl::arg &a, bool is_default) const override;
+  std::string gen_constructor_field_init(int field_num, const std::string &class_name, const tl::arg &a,
+                                         bool is_default) const override;
   std::string gen_constructor_end(const tl::tl_combinator *t, int fields_num, bool is_default) const override;
 };
 
diff --git a/td/generate/tl_writer_hpp.cpp b/td/generate/tl_writer_hpp.cpp
index d4f2af550..ed3aaa769 100644
--- a/td/generate/tl_writer_hpp.cpp
+++ b/td/generate/tl_writer_hpp.cpp
@@ -242,11 +242,13 @@ std::string TD_TL_writer_hpp::gen_constructor_begin(int fields_num, const std::s
   return "";
 }
 
-std::string TD_TL_writer_hpp::gen_constructor_parameter(int field_num, const tl::arg &a, bool is_default) const {
+std::string TD_TL_writer_hpp::gen_constructor_parameter(int field_num, const std::string &class_name, const tl::arg &a,
+                                                        bool is_default) const {
   return "";
 }
 
-std::string TD_TL_writer_hpp::gen_constructor_field_init(int field_num, const tl::arg &a, bool is_default) const {
+std::string TD_TL_writer_hpp::gen_constructor_field_init(int field_num, const std::string &class_name, const tl::arg &a,
+                                                         bool is_default) const {
   return "";
 }
 
diff --git a/td/generate/tl_writer_hpp.h b/td/generate/tl_writer_hpp.h
index 2370ba5fb..119fa87a5 100644
--- a/td/generate/tl_writer_hpp.h
+++ b/td/generate/tl_writer_hpp.h
@@ -84,8 +84,10 @@ class TD_TL_writer_hpp : public TD_TL_writer {
   std::string gen_fetch_switch_end() const override;
 
   std::string gen_constructor_begin(int fields_num, const std::string &class_name, bool is_default) const override;
-  std::string gen_constructor_parameter(int field_num, const tl::arg &a, bool is_default) const override;
-  std::string gen_constructor_field_init(int field_num, const tl::arg &a, bool is_default) const override;
+  std::string gen_constructor_parameter(int field_num, const std::string &class_name, const tl::arg &a,
+                                        bool is_default) const override;
+  std::string gen_constructor_field_init(int field_num, const std::string &class_name, const tl::arg &a,
+                                         bool is_default) const override;
   std::string gen_constructor_end(const tl::tl_combinator *t, int fields_num, bool is_default) const override;
 
   std::string gen_additional_function(const std::string &function_name, const tl::tl_combinator *t,
diff --git a/td/generate/tl_writer_java.cpp b/td/generate/tl_writer_java.cpp
index 2ab35fcc0..0a681ca8b 100644
--- a/td/generate/tl_writer_java.cpp
+++ b/td/generate/tl_writer_java.cpp
@@ -500,7 +500,8 @@ std::string TD_TL_writer_java::gen_constructor_begin(int fields_num, const std::
          class_name + "(";
 }
 
-std::string TD_TL_writer_java::gen_constructor_parameter(int field_num, const tl::arg &a, bool is_default) const {
+std::string TD_TL_writer_java::gen_constructor_parameter(int field_num, const std::string &class_name, const tl::arg &a,
+                                                         bool is_default) const {
   if (is_default) {
     return "";
   }
@@ -517,7 +518,8 @@ std::string TD_TL_writer_java::gen_constructor_parameter(int field_num, const tl
   return (field_num == 0 ? "" : ", ") + field_type + gen_field_name(a.name);
 }
 
-std::string TD_TL_writer_java::gen_constructor_field_init(int field_num, const tl::arg &a, bool is_default) const {
+std::string TD_TL_writer_java::gen_constructor_field_init(int field_num, const std::string &class_name,
+                                                          const tl::arg &a, bool is_default) const {
   std::string field_type = gen_field_type(a);
   if (field_type.empty()) {
     return "";
diff --git a/td/generate/tl_writer_java.h b/td/generate/tl_writer_java.h
index 6dabf4c56..cb8a161f0 100644
--- a/td/generate/tl_writer_java.h
+++ b/td/generate/tl_writer_java.h
@@ -108,8 +108,10 @@ class TD_TL_writer_java : public tl::TL_writer {
   std::string gen_fetch_switch_end() const override;
 
   std::string gen_constructor_begin(int fields_num, const std::string &class_name, bool is_default) const override;
-  std::string gen_constructor_parameter(int field_num, const tl::arg &a, bool is_default) const override;
-  std::string gen_constructor_field_init(int field_num, const tl::arg &a, bool is_default) const override;
+  std::string gen_constructor_parameter(int field_num, const std::string &class_name, const tl::arg &a,
+                                        bool is_default) const override;
+  std::string gen_constructor_field_init(int field_num, const std::string &class_name, const tl::arg &a,
+                                         bool is_default) const override;
   std::string gen_constructor_end(const tl::tl_combinator *t, int fields_num, bool is_default) const override;
 };
 
diff --git a/td/generate/tl_writer_td.cpp b/td/generate/tl_writer_td.cpp
index f147ad4f9..fab140095 100644
--- a/td/generate/tl_writer_td.cpp
+++ b/td/generate/tl_writer_td.cpp
@@ -217,7 +217,8 @@ std::string TD_TL_writer::gen_int_const(const tl::tl_tree *tree_c, const std::ve
   return std::string();
 }
 
-std::string TD_TL_writer::gen_constructor_parameter(int field_num, const tl::arg &a, bool is_default) const {
+std::string TD_TL_writer::gen_constructor_parameter(int field_num, const std::string &class_name, const tl::arg &a,
+                                                    bool is_default) const {
   if (is_default) {
     return "";
   }
diff --git a/td/generate/tl_writer_td.h b/td/generate/tl_writer_td.h
index c59689b20..b9f4d11b0 100644
--- a/td/generate/tl_writer_td.h
+++ b/td/generate/tl_writer_td.h
@@ -55,7 +55,8 @@ class TD_TL_writer : public tl::TL_writer {
 
   std::string gen_int_const(const tl::tl_tree *tree_c, const std::vector<tl::var_description> &vars) const override;
 
-  std::string gen_constructor_parameter(int field_num, const tl::arg &a, bool is_default) const override;
+  std::string gen_constructor_parameter(int field_num, const std::string &class_name, const tl::arg &a,
+                                        bool is_default) const override;
 };
 
 }  // namespace td
diff --git a/tdtl/td/tl/tl_generate.cpp b/tdtl/td/tl/tl_generate.cpp
index b861dcb99..7d1e563cf 100644
--- a/tdtl/td/tl/tl_generate.cpp
+++ b/tdtl/td/tl/tl_generate.cpp
@@ -54,13 +54,13 @@ static void write_class_constructor(tl_outputer &out, const tl_combinator *t, co
   //  std::fprintf(stderr, "Gen constructor %s\n", class_name.c_str());
   int fields_num = 0;
   for (std::size_t i = 0; i < t->args.size(); i++) {
-    fields_num += !w.gen_constructor_parameter(0, t->args[i], is_default).empty();
+    fields_num += !w.gen_constructor_parameter(0, class_name, t->args[i], is_default).empty();
   }
 
   out.append(w.gen_constructor_begin(fields_num, class_name, is_default));
   int field_num = 0;
   for (std::size_t i = 0; i < t->args.size(); i++) {
-    std::string parameter_init = w.gen_constructor_parameter(field_num, t->args[i], is_default);
+    std::string parameter_init = w.gen_constructor_parameter(field_num, class_name, t->args[i], is_default);
     if (parameter_init.size()) {
       out.append(parameter_init);
       field_num++;
@@ -70,7 +70,7 @@ static void write_class_constructor(tl_outputer &out, const tl_combinator *t, co
 
   field_num = 0;
   for (std::size_t i = 0; i < t->args.size(); i++) {
-    std::string field_init = w.gen_constructor_field_init(field_num, t->args[i], is_default);
+    std::string field_init = w.gen_constructor_field_init(field_num, class_name, t->args[i], is_default);
     if (field_init.size()) {
       out.append(field_init);
       field_num++;
diff --git a/tdtl/td/tl/tl_writer.h b/tdtl/td/tl/tl_writer.h
index 790ac9f47..3c3847516 100644
--- a/tdtl/td/tl/tl_writer.h
+++ b/tdtl/td/tl/tl_writer.h
@@ -139,8 +139,10 @@ class TL_writer {
   virtual std::string gen_fetch_switch_end() const = 0;
 
   virtual std::string gen_constructor_begin(int fields_num, const std::string &class_name, bool is_default) const = 0;
-  virtual std::string gen_constructor_parameter(int field_num, const arg &a, bool is_default) const = 0;
-  virtual std::string gen_constructor_field_init(int field_num, const arg &a, bool is_default) const = 0;
+  virtual std::string gen_constructor_parameter(int field_num, const std::string &class_name, const arg &a,
+                                                bool is_default) const = 0;
+  virtual std::string gen_constructor_field_init(int field_num, const std::string &class_name, const arg &a,
+                                                 bool is_default) const = 0;
   virtual std::string gen_constructor_end(const tl_combinator *t, int fields_num, bool is_default) const = 0;
 
   virtual std::string gen_additional_function(const std::string &function_name, const tl_combinator *t,