diff --git a/CMakeLists.txt b/CMakeLists.txt
index 2a74c50..2442edd 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -222,13 +222,14 @@ if(MSVC)
 		endif()
 
 		# correct linker options
-		foreach(flag_var  yaml_c_flags  yaml_cxx_flags)
+		foreach(flag_var  CMAKE_C_FLAGS  CMAKE_CXX_FLAGS)
 			foreach(config_name  ""  DEBUG  RELEASE  MINSIZEREL  RELWITHDEBINFO)
 				set(var_name "${flag_var}")
 				if(NOT "${config_name}" STREQUAL "")
 					set(var_name "${var_name}_${config_name}")
 				endif()
 				string(REPLACE "/MD" "${LIB_RT_OPTION}" ${var_name} "${${var_name}}")
+				set(${var_name} "${${var_name}}" CACHE STRING "" FORCE)
 			endforeach()
 		endforeach()
 	endif()