diff --git a/router/java/src/net/i2p/router/networkdb/kademlia/KademliaNetworkDatabaseFacade.java b/router/java/src/net/i2p/router/networkdb/kademlia/KademliaNetworkDatabaseFacade.java
index 76ded768d..9bbe69603 100644
--- a/router/java/src/net/i2p/router/networkdb/kademlia/KademliaNetworkDatabaseFacade.java
+++ b/router/java/src/net/i2p/router/networkdb/kademlia/KademliaNetworkDatabaseFacade.java
@@ -54,6 +54,7 @@ import net.i2p.router.peermanager.PeerProfile;
 import net.i2p.util.ConcurrentHashSet;
 import net.i2p.util.Log;
 import net.i2p.util.SystemVersion;
+import net.i2p.util.VersionComparator;
 
 /**
  * Kademlia based version of the network database.
@@ -1441,6 +1442,9 @@ public abstract class KademliaNetworkDatabaseFacade extends NetworkDatabaseFacad
         //               + new Date(routerInfo.getPublished()));
     
         _context.peerManager().setCapabilities(key, routerInfo.getCapabilities());
+        // don't store old routers to disk
+        if (persist && VersionComparator.comp(routerInfo.getVersion(), StoreJob.MIN_STORE_VERSION) < 0)
+            persist = false;
         _ds.put(key, routerInfo, persist);
         if (rv == null)
             _kb.add(key);