diff --git a/td/generate/CMakeLists.txt b/td/generate/CMakeLists.txt
index 08727638a..45e897b39 100644
--- a/td/generate/CMakeLists.txt
+++ b/td/generate/CMakeLists.txt
@@ -108,7 +108,7 @@ if (NOT CMAKE_CROSSCOMPILING)
             COMMAND ${CMAKE_COMMAND} -E make_directory ${CMAKE_CURRENT_SOURCE_DIR}/tl-parser/build)
     add_custom_target(configure_tl_parser
             WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}/tl-parser/build
-            COMMAND cmake -DCMAKE_BUILD_TYPE=Release ../
+            COMMAND cmake -DCMAKE_BUILD_TYPE=Debug ../
             COMMENT "Configure tl-parser"
             DEPENDS scheme/mtproto_api.tl scheme/telegram_api.tl scheme/secret_api.tl scheme/td_api.tl
             )
@@ -116,7 +116,7 @@ if (NOT CMAKE_CROSSCOMPILING)
 
     add_custom_target(build_tl_parser
             WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}/tl-parser/build
-            COMMAND ${CMAKE_COMMAND} --build . --config Release
+            COMMAND ${CMAKE_COMMAND} --build .
             COMMENT "Build tl-parser"
             DEPENDS scheme/mtproto_api.tl scheme/telegram_api.tl scheme/secret_api.tl scheme/td_api.tl
             )
diff --git a/td/generate/tl-parser b/td/generate/tl-parser
index 6ff5d408d..c478b339e 160000
--- a/td/generate/tl-parser
+++ b/td/generate/tl-parser
@@ -1 +1 @@
-Subproject commit 6ff5d408d84d5e388b1ea3d6b0432d28238d879d
+Subproject commit c478b339e0e353dee3c9fc432980c04d1b702d21