diff --git a/src/calibre/gui2/preferences/coloring.py b/src/calibre/gui2/preferences/coloring.py
index d084b3f9a6..2e92f34385 100644
--- a/src/calibre/gui2/preferences/coloring.py
+++ b/src/calibre/gui2/preferences/coloring.py
@@ -409,9 +409,10 @@ class RuleEditor(QDialog):  # {{{
         bb.rejected.connect(self.reject)
         l.addWidget(bb, 7, 0, 1, 8)
         if self.rule_kind != 'color':
-            self.remove_button = b = bb.addButton(_('Remove image'), bb.ActionRole)
+            self.remove_button = b = bb.addButton(_('&Remove icon'), bb.ActionRole)
             b.setIcon(QIcon(I('minus.png')))
             b.setMenu(QMenu())
+            b.setToolTip('<p>' + _('Remove a previously added icon. Note that doing so will cause rules that use it to stop working.'))
             self.update_remove_button()
 
         self.conditions_widget = QWidget(self)