diff --git a/themes/bartik/color/color.inc b/themes/bartik/color/color.inc
index cc76f44b9e658888c6a9c23be3823a030c904c89..1f9d4cdd284a929ce3609091c891ac4942308f05 100644
--- a/themes/bartik/color/color.inc
+++ b/themes/bartik/color/color.inc
@@ -124,7 +124,6 @@
   'blend_target' => '#ffffff',
 
   // Preview files.
-  'preview_image' => 'color/preview.png',
   'preview_css' => 'color/preview.css',
   'preview_js' => 'color/preview.js',
   'preview_html' => 'color/preview.html',