diff --git a/product/ZSQLCatalog/SQLCatalog.py b/product/ZSQLCatalog/SQLCatalog.py
index 2981018d0b4d7a15343050bdd5297cb1e4a10220..6f0953cd05aeb10ef44fe97d57c9d7cd3e48e390 100644
--- a/product/ZSQLCatalog/SQLCatalog.py
+++ b/product/ZSQLCatalog/SQLCatalog.py
@@ -1464,7 +1464,7 @@ class Catalog(Folder,
               except ConflictError:
                 raise
               except:
-                LOG('SQLCatalog', WARNING, 'Failed to call method %s on %s' %
+                LOG('SQLCatalog', WARNING, 'Failed to call method %s on %r' %
                     (arg, object), error=sys.exc_info())
                 value = None
               if not disable_cache: