diff --git a/cmake/flags.cmake b/cmake/flags.cmake
index ded8c3e..ce688b9 100644
--- a/cmake/flags.cmake
+++ b/cmake/flags.cmake
@@ -73,7 +73,7 @@ if (CMAKE_CXX_COMPILER_ID MATCHES GNU)
 		endif()
 	endif()
 elseif (CMAKE_CXX_COMPILER_ID MATCHES MSVC)
-	set(GENERAL_FLAGS "/MP /EHa")
+	set(GENERAL_FLAGS "/MP /EHa /permissive-")
 	set(WARNING_FLAGS "/Wall /WX /sdl")
 	set(SECURITY_FLAGS "/GS /guard:cf")
 	set(OPTIMIZATION_FLAGS "/O2 /Oi /Ob2 /Ot /Oy /DNDEBUG /GL")