diff --git a/taxtastic/taxonomy.py b/taxtastic/taxonomy.py
index 9240c92..f4ffe9a 100644
--- a/taxtastic/taxonomy.py
+++ b/taxtastic/taxonomy.py
@@ -833,8 +833,8 @@ def species_below(self, tax_id):
             return newc
 
     def named(self, no_rank=True):
-        nodes = self.nodes
-        s = select(nodes.c.tax_id).where(nodes.c.is_valid)
+        names = self.names
+        s = select(names.c.tax_id).where(names.c.is_classified)
         if not no_rank:
-            s = s.where(nodes.c.rank != 'no_rank')
+            s = s.where(names.c.rank != 'no_rank')
         return [f[0] for f in self.fetchall(s)]