--- a/eric7/UI/FindFileWidget.py	Sat Sep 25 18:08:10 2021 +0200
+++ b/eric7/UI/FindFileWidget.py	Sat Sep 25 18:12:48 2021 +0200
@@ -557,7 +557,7 @@
             self.replaceHistory.insert(0, replTxt)
             self.replacetextCombo.clear()
             self.replacetextCombo.addItems(self.replaceHistory)
-            Preferences.Prefs.settings.setValue(
+            Preferences.getSettings().setValue(
                 "FindFileWidget/ReplaceHistory",
                 self.replaceHistory[:30])