diff --git a/closed-build.gradle b/closed-build.gradle
--- a/closed-build.gradle
+++ b/closed-build.gradle
@@ -47,8 +47,7 @@
                     "MSVCDIR"              : WINDOWS_VS_MSVCDIR,
                     "INCLUDE"              : WINDOWS_VS_INCLUDE,
                     "LIB"                  : WINDOWS_VS_LIB,
-                    "LIBPATH"              : WINDOWS_VS_LIBPATH,
-                    "DXSDK_DIR"            : WINDOWS_DXSDK_DIR
+                    "LIBPATH"              : WINDOWS_VS_LIBPATH
             ]);
             commandLine "cmd", "/c", ant, "-Dbuild.compiler=javac1.7"
         } else {