diff --git a/src/calibre/gui2/preferences/tweaks.py b/src/calibre/gui2/preferences/tweaks.py
index 77fec1e850..2a27fc2339 100644
--- a/src/calibre/gui2/preferences/tweaks.py
+++ b/src/calibre/gui2/preferences/tweaks.py
@@ -155,7 +155,7 @@ class Tweaks(QAbstractListModel, AdaptSQP):  # {{{
             ans.setBold(True)
             return ans
         if role == Qt.ToolTipRole:
-            tt = _('This tweak has it default value')
+            tt = _('This tweak has its default value')
             if tweak.is_customized:
                 tt = '<p>'+_('This tweak has been customized')
                 tt += '<pre>'