diff --git a/sigi/settings/__init__.py b/sigi/settings/__init__.py
index ce3e479..2a722e5 100644
--- a/sigi/settings/__init__.py
+++ b/sigi/settings/__init__.py
@@ -1,7 +1,13 @@
 try:
-    from .prod import *
+    from prod import *
 except ImportError:
-    from warnings import warn
-    msg = "You don't have a production settings file, using development settings."
-    warn(msg, category=ImportWarning)
-    from .dev import *
+    from django.core.exceptions import ImproperlyConfigured
+    msg = """
+
+  ######################################################################
+  Arquivo prod.py (django settings) nao encontrado.
+  Se vc esta num ambiente de desenvolvimento pode cria-lo com
+    ln -s dev.py prod.py
+  ######################################################################
+"""
+    raise ImproperlyConfigured(msg)