diff --git a/chainqueue/store/base.py b/chainqueue/store/base.py
index cf0fc64..8556b89 100644
--- a/chainqueue/store/base.py
+++ b/chainqueue/store/base.py
@@ -77,21 +77,27 @@ class Store:
         return (s, v,)
 
 
-    def by_state(self, state=0, limit=4096, strict=False, threshold=None):
+    def by_state(self, state=0, not_state=0, limit=4096, strict=False, threshold=None):
         hashes = []
         i = 0
 
         refs_state = self.state_store.list(state)
+        refs_state.sort()
         
         for ref in refs_state:
             v = from_key(ref)
             hsh = v[2]
 
+            item_state = self.state_store.state(ref)
+
             if strict:
-                item_state = self.state_store.state(ref)
                 if item_state & state != item_state:
                     continue
 
+            logg.info('state {} {}'.format(ref, item_state))
+            if item_state & not_state > 0:
+                continue
+
             if threshold != None:
                 v = self.state_store.modified(ref)
                 if v > threshold: