diff --git a/slic/gui/widgets/labeled.py b/slic/gui/widgets/labeled.py
index 8c5eb1b9..2a63492a 100644
--- a/slic/gui/widgets/labeled.py
+++ b/slic/gui/widgets/labeled.py
@@ -30,7 +30,7 @@ def make_labeled(cls):
             self.widget = widget = cls(parent, *args, **kwargs)
 
             self.Add(label,  flag=wx.EXPAND)
-            self.Add(widget, flag=wx.EXPAND)
+            self.Add(widget, flag=wx.EXPAND, proportion=1)
 
 
         def __getattr__(self, name):