diff --git a/ViaStitching/FillAreaDialog.py b/ViaStitching/FillAreaDialog.py
index 36b065b..e9cbf91 100644
--- a/ViaStitching/FillAreaDialog.py
+++ b/ViaStitching/FillAreaDialog.py
@@ -1,7 +1,7 @@
 # -*- coding: utf-8 -*-
 
 ###########################################################################
-## Python code generated with wxFormBuilder (version Oct 26 2018)
+## Python code generated with wxFormBuilder (version Oct  1 2019)
 ## http://www.wxformbuilder.org/
 ##
 ## PLEASE DO *NOT* EDIT THIS FILE!
@@ -19,11 +19,7 @@ class FillAreaDialog ( wx.Dialog ):
 	def __init__( self, parent ):
 		wx.Dialog.__init__ ( self, parent, id = wx.ID_ANY, title = u"Fill Area parameters", pos = wx.DefaultPosition, size = wx.Size( 402,540 ), style = wx.DEFAULT_DIALOG_STYLE )
 
-		import sys
-		if sys.version_info[0] == 2:
-			self.SetSizeHintsSz( wx.DefaultSize, wx.DefaultSize )
-		else:
-			self.SetSizeHints( wx.DefaultSize, wx.DefaultSize )
+		self.SetSizeHints( wx.DefaultSize, wx.DefaultSize )
 
 		bSizer3 = wx.BoxSizer( wx.VERTICAL )
 
@@ -77,8 +73,8 @@ class FillAreaDialog ( wx.Dialog ):
 		fgSizer1.Add( self.m_staticText6, 1, wx.ALL|wx.EXPAND, 5 )
 
 		m_cbNetChoices = []
-		self.m_cbNet = wx.ComboBox( self, wx.ID_ANY, u"GND", wx.DefaultPosition, wx.DefaultSize, m_cbNetChoices, 0 )
-		fgSizer1.Add( self.m_cbNet, 0, wx.ALL, 5 )
+		self.m_cbNet = wx.ComboBox( self, wx.ID_ANY, u"GND", wx.DefaultPosition, wx.DefaultSize, m_cbNetChoices, wx.CB_READONLY )
+		fgSizer1.Add( self.m_cbNet, 1, wx.ALL|wx.EXPAND, 5 )
 
 		self.m_staticText7 = wx.StaticText( self, wx.ID_ANY, u"Debug mode", wx.DefaultPosition, wx.DefaultSize, 0 )
 		self.m_staticText7.Wrap( -1 )
diff --git a/ViaStitching/FillAreaTpl.fbp b/ViaStitching/FillAreaTpl.fbp
index f519ab3..d5fa1cc 100644
--- a/ViaStitching/FillAreaTpl.fbp
+++ b/ViaStitching/FillAreaTpl.fbp
@@ -705,8 +705,8 @@
                         </object>
                         <object class="sizeritem" expanded="1">
                             <property name="border">5</property>
-                            <property name="flag">wxALL</property>
-                            <property name="proportion">0</property>
+                            <property name="flag">wxALL|wxEXPAND</property>
+                            <property name="proportion">1</property>
                             <object class="wxComboBox" expanded="1">
                                 <property name="BottomDockable">1</property>
                                 <property name="LeftDockable">1</property>
@@ -754,7 +754,7 @@
                                 <property name="selection">-1</property>
                                 <property name="show">1</property>
                                 <property name="size"></property>
-                                <property name="style"></property>
+                                <property name="style">wxCB_READONLY</property>
                                 <property name="subclass"></property>
                                 <property name="toolbar_pane">0</property>
                                 <property name="tooltip"></property>