diff --git a/gui/wxpython/gui_core/dialogs.py b/gui/wxpython/gui_core/dialogs.py
index 2f298dfc740..60c6f186182 100644
--- a/gui/wxpython/gui_core/dialogs.py
+++ b/gui/wxpython/gui_core/dialogs.py
@@ -60,6 +60,7 @@
     StaticBox,
     StaticText,
     TextCtrl,
+    ListBox,
 )
 
 
@@ -834,9 +835,12 @@ def _createDialogBody(self):
 
         sizer = wx.BoxSizer(wx.HORIZONTAL)
 
-        self.gLayerBox = wx.ListBox(
-            parent=self.gListPanel, id=wx.ID_ANY, size=(-1, 150),
-            style=wx.LB_MULTIPLE | wx.LB_NEEDED_SB)
+        self.gLayerBox = ListBox(
+            parent=self.gListPanel,
+            id=wx.ID_ANY,
+            size=(-1, 150),
+            style=wx.LB_MULTIPLE | wx.LB_NEEDED_SB,
+        )
         sizer.Add(self.gLayerBox, proportion=1, flag=wx.EXPAND)
 
         self.addLayer = Button(self.gListPanel, id=wx.ID_ADD)
diff --git a/gui/wxpython/gui_core/wrap.py b/gui/wxpython/gui_core/wrap.py
index 7cc2282d59b..72324ee8364 100644
--- a/gui/wxpython/gui_core/wrap.py
+++ b/gui/wxpython/gui_core/wrap.py
@@ -762,6 +762,10 @@ def SetToolTip(self, tip):
         else:
             wx.ListBox.SetToolTipString(self, tip)
 
+    def DeselectAll(self):
+        for i in range(self.GetCount()):
+            self.Deselect(i)
+
 
 class HyperlinkCtrl(HyperlinkCtrl_):
     """Wrapper around HyperlinkCtrl to have more control