--- a/eric6/WebBrowser/Navigation/NavigationContainer.py	Mon Mar 01 17:48:43 2021 +0100
+++ b/eric6/WebBrowser/Navigation/NavigationContainer.py	Tue Mar 02 17:17:09 2021 +0100
@@ -29,7 +29,8 @@
         self.__layout.setSpacing(0)
         
         self.setLayout(self.__layout)
-        self.setSizePolicy(QSizePolicy.Preferred, QSizePolicy.Maximum)
+        self.setSizePolicy(QSizePolicy.Policy.Preferred,
+                           QSizePolicy.Policy.Maximum)
     
     def addWidget(self, widget):
         """