diff --git a/src/asammdf/gui/widgets/mdi_area.py b/src/asammdf/gui/widgets/mdi_area.py
index b6c5c10e8..c93b018e1 100644
--- a/src/asammdf/gui/widgets/mdi_area.py
+++ b/src/asammdf/gui/widgets/mdi_area.py
@@ -1552,7 +1552,9 @@ def _add_flexray_bus_trace_window(self, ranges=None):
 
                     if "FLX_NullFrame.Dir" in names:
                         if data["FLX_NullFrame.Dir"].dtype.kind == "S":
-                            columns["Direction"][index] = [v.decode("utf-8") for v in data["FLX_NullFrame.Dir"].tolist()]
+                            columns["Direction"][index] = [
+                                v.decode("utf-8") for v in data["FLX_NullFrame.Dir"].tolist()
+                            ]
                         else:
                             columns["Direction"][index] = [
                                 "TX" if dir else "RX" for dir in data["FLX_NullFrame.Dir"].astype("u1").tolist()
diff --git a/src/asammdf/gui/widgets/numeric.py b/src/asammdf/gui/widgets/numeric.py
index 18dfb13f3..505b539fb 100644
--- a/src/asammdf/gui/widgets/numeric.py
+++ b/src/asammdf/gui/widgets/numeric.py
@@ -1626,7 +1626,7 @@ def keyPressEvent(self, event):
             )
 
             if file_name:
-                signals = [signal for signal in self.signals if signal.enable]
+                signals = [signal for signal in self.channels.dataView.signals if signal.enable]
                 if signals:
                     with mdf_module.MDF() as mdf:
                         groups = {}