diff --git a/lib/data/gecko-prefs.js b/lib/data/gecko-prefs.js
index cbbcfc11..ee613826 100644
--- a/lib/data/gecko-prefs.js
+++ b/lib/data/gecko-prefs.js
@@ -33,11 +33,6 @@ user_pref("font.size.unit", "pt");
 
 user_pref("layout.css.dpi", 134);
 
-user_pref("font.name.cursive.ar", "KacstQurn");
-user_pref("font.name.fantasy.ar", "KacstDecorative");
-user_pref("font.name.monospace.ar", "KacstDigital");
-user_pref("font.name.sans-serif.ar", "KacstQurn");
-user_pref("font.name.serif.ar", "KacstBook");
 user_pref("font.default.ar", "sans-serif");
 user_pref("font.size.variable.ar", 12);
 user_pref("font.size.fixed.ar", 9);