diff --git a/cmake/backend/emscripten.cmake b/cmake/backend/emscripten.cmake
index cf6986b..c13496a 100644
--- a/cmake/backend/emscripten.cmake
+++ b/cmake/backend/emscripten.cmake
@@ -130,6 +130,9 @@ function(nui_add_emscripten_target)
         set(PATCH_DOTENV_COMMAND COMMAND cmake -E true)
     endif()
 
+    get_target_property(TARGET_CXX_STANDARD ${NUI_ADD_EMSCRIPTEN_TARGET_ARGS_TARGET} CXX_STANDARD)
+    message(STATUS "C++ standard of frontend subproject: ${TARGET_CXX_STANDARD}")
+
     include(ExternalProject)
     ExternalProject_Add(
         "${NUI_ADD_EMSCRIPTEN_TARGET_ARGS_TARGET}-emscripten"
@@ -137,6 +140,7 @@ function(nui_add_emscripten_target)
         # emscripten cmake with passed down Release/Debug build type
         CONFIGURE_COMMAND
             ${EMCMAKE} cmake
+                "-DCMAKE_CXX_STANDARD=${TARGET_CXX_STANDARD}"
                 ${NUI_ADD_EMSCRIPTEN_TARGET_ARGS_CMAKE_OPTIONS}
                 "-DNUI_NPM=${NUI_NPM}"
                 "-DNUI_NODE=${NUI_NODE}"
diff --git a/cmake/frontend/emscripten.cmake b/cmake/frontend/emscripten.cmake
index c1cd356..f6b1393 100644
--- a/cmake/frontend/emscripten.cmake
+++ b/cmake/frontend/emscripten.cmake
@@ -2,7 +2,7 @@ function(nui_prepare_emscripten_target)
     cmake_parse_arguments(
         NUI_PREPARE_EMSCRIPTEN_TARGET_ARGS
         "NO_INLINE;NO_INLINE_INJECT;LEAN_INDEX_HTML"
-        "TARGET;PREJS;STATIC;UNPACKED_MODE"
+        "TARGET;PREJS;STATIC;UNPACKED_MODE;CXX_STANDARD"
         "EMSCRIPTEN_LINK_OPTIONS;EMSCRIPTEN_COMPILE_OPTIONS;PARCEL_ARGS;NPM_INSTALL_ARGS;OBSERVED_BUNDLE_FILES"
         ${ARGN}
     )
@@ -28,9 +28,13 @@ function(nui_prepare_emscripten_target)
         set(NUI_LEAN_HTML "lean")
     endif()
 
+    if (NOT NUI_PREPARE_EMSCRIPTEN_TARGET_ARGS_CXX_STANDARD)
+        get_target_property(NUI_PREPARE_EMSCRIPTEN_TARGET_ARGS_CXX_STANDARD ${NUI_PREPARE_EMSCRIPTEN_TARGET_ARGS_TARGET} CXX_STANDARD)
+    endif()
+
     set(INLINER_COMMAND "")
     if (NOT NUI_PREPARE_EMSCRIPTEN_TARGET_ARGS_NO_INLINE)
-        nui_enable_inline(TARGET ${NUI_PREPARE_EMSCRIPTEN_TARGET_ARGS_TARGET} RELATIVE_TO ${CMAKE_CURRENT_SOURCE_DIR})
+        nui_enable_inline(TARGET ${NUI_PREPARE_EMSCRIPTEN_TARGET_ARGS_TARGET} RELATIVE_TO ${CMAKE_CURRENT_SOURCE_DIR} CXX_STANDARD ${NUI_PREPARE_EMSCRIPTEN_TARGET_ARGS_CXX_STANDARD})
         if (NOT NUI_PREPARE_EMSCRIPTEN_TARGET_ARGS_NO_INLINE_INJECT)
             set(INLINER_COMMAND COMMAND ${NUI_INLINE_INJECTOR_TARGET_FILE} "${CMAKE_BINARY_DIR}/static/index.html" "${CMAKE_BINARY_DIR}/nui-inline/inline_imports.js" "${CMAKE_BINARY_DIR}/nui-inline/inline_imports.css" ${NUI_DEFER_INLINE_SCRIPTS_TAG} ${NUI_LEAN_HTML})
         endif()
diff --git a/nui/include/nui/frontend/utility/val_conversion.hpp b/nui/include/nui/frontend/utility/val_conversion.hpp
index 8ddce54..3db5b50 100644
--- a/nui/include/nui/frontend/utility/val_conversion.hpp
+++ b/nui/include/nui/frontend/utility/val_conversion.hpp
@@ -57,9 +57,9 @@ namespace Nui
     template <typename T>
     Nui::val convertToVal(std::map<std::string, T> const& map);
     template <typename T>
-    Nui::val convertToVal(std::unique_ptr<T> const& map);
+    Nui::val convertToVal(std::unique_ptr<T> const& ptr);
     template <typename T>
-    Nui::val convertToVal(std::shared_ptr<T> const& map);
+    Nui::val convertToVal(std::shared_ptr<T> const& ptr);
     inline Nui::val convertToVal(long long)
     {
         throw std::runtime_error("Cannot convert long long to val");