diff --git a/CMakeLists.txt b/CMakeLists.txt
index 3dbf98b788..07fdbc7dda 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1077,9 +1088,9 @@ if(MSVC)
                # add here warnings which should be disabled /wdXXXX
                set(MSVC_W_DISABLE "/wd4288 /wd4355 /wd4800 /wd4996 /wd4311 /wd4312 /wd4505 /wd4267 /wd4512 /wd4245 /wd4127 /wd4180 /wd4231")

-               set(CMAKE_CXX_FLAGS_DEBUG      "${CMAKE_CXX_FLAGS_DEBUG} /Wp64 ${MSVC_W_ERROR} ${MSVC_W_DISABLE}")
-               set(CMAKE_CXX_FLAGS_RELEASE    "${CMAKE_CXX_FLAGS_RELEASE} /Wp64 ${MSVC_W_ERROR} ${MSVC_W_DISABLE}")
-               set(CMAKE_CXX_FLAGS_MINSIZEREL "${CMAKE_CXX_FLAGS_MINSIZEREL} /Wp64 ${MSVC_W_ERROR} ${MSVC_W_DISABLE}")
+               set(CMAKE_CXX_FLAGS_DEBUG      "${CMAKE_CXX_FLAGS_DEBUG} /W4 ${MSVC_W_ERROR} ${MSVC_W_DISABLE}")
+               set(CMAKE_CXX_FLAGS_RELEASE    "${CMAKE_CXX_FLAGS_RELEASE} /W4 ${MSVC_W_ERROR} ${MSVC_W_DISABLE}")
+               set(CMAKE_CXX_FLAGS_MINSIZEREL "${CMAKE_CXX_FLAGS_MINSIZEREL} /W4 ${MSVC_W_ERROR} ${MSVC_W_DISABLE}")

        else()
                set(CMAKE_CXX_WARNING_LEVEL 3 CACHE STRING "Warning level" FORCE)