diff --git a/src/calibre/ebooks/oeb/display/cfi.coffee b/src/calibre/ebooks/oeb/display/cfi.coffee
index ab4d456994..5a6d5751a0 100644
--- a/src/calibre/ebooks/oeb/display/cfi.coffee
+++ b/src/calibre/ebooks/oeb/display/cfi.coffee
@@ -102,7 +102,7 @@ viewport_to_document = (x, y, doc=window?.document) -> # {{{
     return [x, y]
 # }}}
 
-# Equivalent for caretRangeFromPoint for non WebKit browsers {{{
+# Convert point to character offset {{{
 range_has_point = (range, x, y) ->
     for rect in range.getClientRects()
         if (rect.left <= x <= rect.right) and (rect.top <= y <= rect.bottom)
diff --git a/src/calibre/gui2/preferences/main.py b/src/calibre/gui2/preferences/main.py
index 65566c1107..cc35c866bd 100644
--- a/src/calibre/gui2/preferences/main.py
+++ b/src/calibre/gui2/preferences/main.py
@@ -338,7 +338,7 @@ class Preferences(QMainWindow):
 
             d = warning_dialog(self, _('Restart needed'), msg,
                     show_copy_button=False)
-            b = d.bb.addButton(_('Restart calibre'), d.bb.AcceptRole)
+            b = d.bb.addButton(_('Restart calibre now'), d.bb.AcceptRole)
             b.setIcon(QIcon(I('lt.png')))
             d.do_restart = False
             def rf():