diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index c70603ce..b277f5e6 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -41,6 +41,7 @@ if(WIN32)
      add_definitions( -DMSVC -D_CRT_SECURE_NO_WARNINGS )
      add_definitions( -D__SDL__  -D__QT_DRIVER__  -DQT_DEPRECATED_WARNINGS )
      add_definitions( -DFCEUDEF_DEBUGGER )
+     add_definitions( /wd4267 /wd4244 /wd4018 )
      include_directories( ${SDL_INSTALL_PREFIX}/SDL2/include )
      include_directories( ${CMAKE_CURRENT_SOURCE_DIR}/drivers/win/zlib )
      set( OPENGL_LDFLAGS  OpenGL::GL )