diff --git a/pelican/contents.py b/pelican/contents.py
index c33511c1..bcff3cd5 100644
--- a/pelican/contents.py
+++ b/pelican/contents.py
@@ -355,6 +355,6 @@ def is_valid_content(content, f):
         content.check_properties()
         return True
     except NameError as e:
-        logger.error("Skipping %s: impossible to find informations about "
-                      "'%s'" % (f, e))
+        logger.warning("Skipping %s: impossible to find informations about "
+                        "'%s'" % (f, e))
         return False