1 files changed, 1 insertions, 1 deletions
diff --git a/o3d/core/core.gyp b/o3d/core/core.gyp
index 46c5d4b..f324884 100644
--- a/o3d/core/core.gyp
+++ b/o3d/core/core.gyp
@@ -32,7 +32,7 @@
       ],
       ['renderer == "d3d9" and OS == "win"',
         {
-          'include_dirs': [
+          'msvs_system_include_dirs': [
             '$(DXSDK_DIR)/Include',
           ],
         }