diff --git a/CMakeLists.txt b/CMakeLists.txt
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1475,7 +1475,7 @@ elseif(WINDOWS)
     if(DEFINED MSVC_VERSION AND NOT ${MSVC_VERSION} LESS 1700)
         set(USE_WINSDK_DIRECTX TRUE)
     endif()
-    if(NOT CMAKE_COMPILER_IS_MINGW AND NOT USE_WINSDK_DIRECTX)
+    if(NOT MINGW AND NOT USE_WINSDK_DIRECTX)
       if("$ENV{DXSDK_DIR}" STREQUAL "")
         message_error("DIRECTX requires the \$DXSDK_DIR environment variable to be set")
       endif()
@@ -1493,7 +1493,7 @@ elseif(WINDOWS)
     check_include_file(dxgi.h HAVE_DXGI_H)
     if(HAVE_D3D_H OR HAVE_D3D11_H OR HAVE_DDRAW_H OR HAVE_DSOUND_H OR HAVE_DINPUT_H)
       set(HAVE_DIRECTX TRUE)
-      if(NOT CMAKE_COMPILER_IS_MINGW AND NOT USE_WINSDK_DIRECTX)
+      if(NOT MINGW AND NOT USE_WINSDK_DIRECTX)
       # TODO: change $ENV{DXSDL_DIR} to get the path from the include checks
         link_directories($ENV{DXSDK_DIR}\\lib\\${PROCESSOR_ARCH})
         include_directories($ENV{DXSDK_DIR}\\Include)