diff --git a/gfx/skia/moz.build b/gfx/skia/moz.build
index 1b1c642a6b..ad31c8d484 100644
--- a/gfx/skia/moz.build
+++ b/gfx/skia/moz.build
@@ -646,8 +646,7 @@ else:
 # We allow warnings for third-party code that can be updated from upstream.
 ALLOW_COMPILER_WARNINGS = True
 
-FINAL_LIBRARY = 'xul'
-
+FINAL_LIBRARY = 'gkmedias'
 LOCAL_INCLUDES += [
     'skia/include/c',
     'skia/include/config',
@@ -694,6 +693,11 @@ if CONFIG['MOZ_WIDGET_TOOLKIT'] == 'windows':
         'skia/src/fonts/SkRemotableFontMgr.cpp',
     ]
 
+if CONFIG['GKMEDIAS_SHARED_LIBRARY']:
+    DEFINES['SKIA_DLL'] = 1
+    DEFINES['GR_DLL'] = 1
+    DEFINES['SK_FONT_HOST_USE_SYSTEM_SETTINGS'] = 1
+
 # We should autogenerate these SSE related flags.
 
 if CONFIG['_MSC_VER']: