diff --git a/src/sugar/graphics/entry.py b/src/sugar/graphics/entry.py
index 95510e52..08ea3ca6 100644
--- a/src/sugar/graphics/entry.py
+++ b/src/sugar/graphics/entry.py
@@ -20,6 +20,16 @@ import hippo
 
 class CanvasEntry(hippo.CanvasEntry):
     def set_background(self, color_spec):
+        """
+        Parameters
+        ----------
+        color_spec :
+
+        Returns
+        -------
+        None
+
+        """
         color = gtk.gdk.color_parse(color_spec)
         self.props.widget.modify_bg(gtk.STATE_INSENSITIVE, color)
         self.props.widget.modify_base(gtk.STATE_INSENSITIVE, color)