diff --git a/brightray/brightray.gyp b/brightray/brightray.gyp
index 90759e731f3..b91e1d9aed1 100644
--- a/brightray/brightray.gyp
+++ b/brightray/brightray.gyp
@@ -19,6 +19,8 @@
           '..',
           '<(libchromiumcontent_include_dir)',
           '<(libchromiumcontent_include_dir)/third_party/skia/include/config',
+          # For SkMatrix.h.
+          '<(libchromiumcontent_include_dir)/third_party/skia/include/core',
         ],
       },
       'sources': [