diff --git a/src/gui_qt/fit/fit_parameter.py b/src/gui_qt/fit/fit_parameter.py
index fb36072..682893e 100644
--- a/src/gui_qt/fit/fit_parameter.py
+++ b/src/gui_qt/fit/fit_parameter.py
@@ -181,7 +181,11 @@ class QFitParameterWidget(QtWidgets.QWidget, Ui_FormFit):
         for i, value in enumerate(self.data_values[sid]):
             w = self.data_parameter[i]
             w.blockSignals(True)
-            w.show_as_local_parameter(value is not None)
+            try:
+                w.show_as_local_parameter(value is not None)
+            except AttributeError:
+                pass
+
             if value is None:
                 w.value = self.glob_values[i]
             else:
diff --git a/src/gui_qt/io/gracereader.py b/src/gui_qt/io/gracereader.py
index 26b15ff..be3d62a 100644
--- a/src/gui_qt/io/gracereader.py
+++ b/src/gui_qt/io/gracereader.py
@@ -89,8 +89,11 @@ class QGraceReader(QtWidgets.QDialog, Ui_Dialog):
             item = iterator.value()
             key = (item.data(0, QtCore.Qt.UserRole))
             s = self._reader.dataset(*key)
-            label = self._reader.get_property(*key, 'legend').replace('"', '')
-            # label = self._reader.graphs[key[0]].sets[key[1]]['legend'].replace('"', '')
+            label = self._reader.get_property(*key, 'legend')
+            if label is None:
+                label = ''
+            else:
+                label = label.replace('"', '')
             sd = s.data
             sd = np.atleast_2d(sd)
             if s.type == 'xydy':