Index: django/core/validators.py
===================================================================
--- django/core/validators.py	(revision 5788)
+++ django/core/validators.py	(working copy)
@@ -442,7 +442,7 @@
     try:
         float(data)
     except ValueError:
-        raise ValidationError, ugettext("Please enter a valid floating point number.")
+        raise ValidationError, _("Please enter a valid floating point number.")
 
 class HasAllowableSize(object):
     """