diff --git a/src/calibre/gui2/convert/lrf_output.py b/src/calibre/gui2/convert/lrf_output.py index 1f52598b93..b0ddc3dadb 100644 --- a/src/calibre/gui2/convert/lrf_output.py +++ b/src/calibre/gui2/convert/lrf_output.py @@ -45,9 +45,11 @@ class PluginWidget(Widget, Ui_Form): def set_value_handler(self, g, val): if unicode(g.objectName()) in ('opt_serif_family', 'opt_sans_family', 'opt_mono_family'): - idx = g.findText(val, Qt.MatchFixedString) + idx = -1 + if val: + idx = g.findText(val, Qt.MatchFixedString) if idx < 0: idx = 0 - g.setCurrentIndex(0) + g.setCurrentIndex(idx) return True return False