--- a/eric7/Project/LexerAssociationDialog.py	Tue May 18 19:25:53 2021 +0200
+++ b/eric7/Project/LexerAssociationDialog.py	Wed May 19 17:36:34 2021 +0200
@@ -80,7 +80,7 @@
                 lexer = "Pygments|{0}".format(pygmentsLexer)
         if ext and lexer:
             itmList = self.editorLexerList.findItems(
-                ext, Qt.MatchFlags(Qt.MatchFlag.MatchExactly), 0)
+                ext, Qt.MatchFlag.MatchExactly, 0)
             if itmList:
                 index = self.editorLexerList.indexOfTopLevelItem(itmList[0])
                 itm = self.editorLexerList.takeTopLevelItem(index)