diff --git a/wizpym.py b/wizpym.py
index fa98604..2ad9b63 100644
--- a/wizpym.py
+++ b/wizpym.py
@@ -124,11 +124,11 @@ class Pane(gtk.VBox):
             self._header.show_all()
 
     def set_error(self, msg):
-        """Add a help header to the pane with the given message.
+        """Display a error in the pane's footer.
 
-        Since it is quite common that panes begin with a little guide
-        explaining the current step, calling this method will ensure
-        such panes all present the same header style.
+        Display the given message in red in a special label attached
+        to the footer of the pane. The pane is hidden if the message
+        is empty.
         """
         self._error.foreach(lambda w: self._error.remove(w))
         if msg: