--- a/eric6/UI/Previewers/PreviewerQSS.py	Sat Apr 10 18:31:17 2021 +0200
+++ b/eric6/UI/Previewers/PreviewerQSS.py	Sat Apr 10 18:38:27 2021 +0200
@@ -29,7 +29,7 @@
         
         @param parent reference to the parent widget (QWidget)
         """
-        super(PreviewerQSS, self).__init__(parent)
+        super().__init__(parent)
         self.setupUi(self)
         
         # menu for the tool button