diff --git a/gyp/skia.gyp b/gyp/skia.gyp
index ca3f1bcdfb..4b0b6ae890 100644
--- a/gyp/skia.gyp
+++ b/gyp/skia.gyp
@@ -34,6 +34,7 @@
       [ 'OS == "linux"', {
         'defines': [
           'SK_SAMPLES_FOR_X',
+          'SK_BUILD_FOR_UNIX',
         ],
       }],
     ],