diff --git a/src/css_composer/config/config.js b/src/css_composer/config/config.js
index b1b60d8bc..f5a8839d4 100644
--- a/src/css_composer/config/config.js
+++ b/src/css_composer/config/config.js
@@ -2,9 +2,6 @@ export default {
   // Style prefix
   stylePrefix: 'css-',
 
-  // Custom CSS string to render on top
-  staticRules: '',
-
   // Default CSS style
   rules: []
 };