diff --git a/src/calibre/gui2/convert/regex_builder.py b/src/calibre/gui2/convert/regex_builder.py index c5c8d84a88..ca6e429176 100644 --- a/src/calibre/gui2/convert/regex_builder.py +++ b/src/calibre/gui2/convert/regex_builder.py @@ -47,6 +47,8 @@ class RegexBuilder(QDialog, Ui_RegexBuilder): return False else: self.regex.setStyleSheet('QLineEdit { color: black; background-color: white; }') + self.preview.setExtraSelections([]) + return False return True def do_test(self):