diff --git a/lib/network.py b/lib/network.py
index 6cf68aff..676ba645 100644
--- a/lib/network.py
+++ b/lib/network.py
@@ -1023,7 +1023,6 @@ class Network(util.DaemonThread):
     def blockchain(self):
         if self.interface and self.interface.blockchain is not None:
             self.blockchain_index = self.interface.blockchain.checkpoint
-            self.config.set_key('blockchain_index', self.blockchain_index)
         return self.blockchains[self.blockchain_index]
 
     def get_blockchains(self):