diff --git a/web/db.py b/web/db.py
index 02670012..30f32323 100644
--- a/web/db.py
+++ b/web/db.py
@@ -948,7 +948,9 @@ def query(self, *a, **kw):
         out = DB.query(self, *a, **kw)
         if isinstance(out, iterbetter):
             # rowcount is not provided by sqlite
-            del out.__len__
+            def _len(): 
+                raise self.db_module.NotSupportedError("rowcount is not supported by sqlite")
+            out.__len__ = _len
         return out
 
 class FirebirdDB(DB):
diff --git a/web/utils.py b/web/utils.py
index e80113de..9d018194 100755
--- a/web/utils.py
+++ b/web/utils.py
@@ -541,6 +541,10 @@ def __getitem__(self, i):
             return self.i.next()
         except StopIteration: 
             raise IndexError, str(i)
+            
+    def __nonzero__(self):
+        return len(self) != 0
+        
 iterbetter = IterBetter
 
 def dictreverse(mapping):