diff --git a/defaults/preferences/legacy.js b/defaults/preferences/legacy.js
deleted file mode 100644
index aba472c9..00000000
--- a/defaults/preferences/legacy.js
+++ /dev/null
@@ -1,6 +0,0 @@
-// prefs for leacy features
-pref("extensions.treestyletab.tabbar.transparent.partialTransparency", "0.25");
-
-// for compatibility with old FoxSplitter.
-pref("extensions.treestyletab.tabbar.position.subbrowser.enabled", false);
-