diff --git a/weboob/tools/application/repl.py b/weboob/tools/application/repl.py
index c3ccfc58..82bf7c6f 100644
--- a/weboob/tools/application/repl.py
+++ b/weboob/tools/application/repl.py
@@ -1080,7 +1080,7 @@ class ReplApplication(Cmd, BaseApplication):
         except FieldNotFound, e:
             print e
         except MandatoryFieldsNotFound, e:
-            print '%s Hint: select missing fields or use another formatter (ex: multiline).' % e
+            print >> sys.stderr, '%s Hint: select missing fields or use another formatter (ex: multiline).' % e
 
     def flush(self):
         self.formatter.flush()