diff --git a/libs/cobalt/include/boost/cobalt/concepts.hpp b/libs/cobalt/include/boost/cobalt/concepts.hpp
index d49f2ec..a9bdb80 100644
--- a/libs/cobalt/include/boost/cobalt/concepts.hpp
+++ b/libs/cobalt/include/boost/cobalt/concepts.hpp
@@ -62,7 +62,7 @@ struct enable_awaitables
 template <typename T>
 concept with_get_executor = requires (T& t)
 {
-  {t.get_executor()} -> asio::execution::executor;
+  t.get_executor();
 };
 
 
diff --git a/libs/context/CMakeLists.txt b/libs/context/CMakeLists.txt
index 5870537..f8c3e61 100644
--- a/libs/context/CMakeLists.txt
+++ b/libs/context/CMakeLists.txt
@@ -189,7 +189,7 @@ if(BOOST_CONTEXT_IMPLEMENTATION STREQUAL "fcontext")
 
   if(CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
     set_property(SOURCE ${ASM_SOURCES} APPEND PROPERTY COMPILE_OPTIONS "-x" "assembler-with-cpp")
-  elseif(CMAKE_CXX_COMPILER_ID STREQUAL "Clang")
+  elseif(CMAKE_CXX_COMPILER_ID STREQUAL "Clang" AND NOT MSVC)
     set_property(SOURCE ${ASM_SOURCES} APPEND PROPERTY COMPILE_OPTIONS "-Wno-unused-command-line-argument")
   endif()