diff --git a/NODES_on_Ethereum/README.md b/NODES_on_Ethereum/README.md
index fac5b83..7fd0671 100644
--- a/NODES_on_Ethereum/README.md
+++ b/NODES_on_Ethereum/README.md
@@ -15,7 +15,7 @@
 * [advanced resources on running nodes and validators](running-a-node-advanced.md)
 * [geth on kubernetes](geth_and_k8s)
 * [list and specs for relays](RELAYS.md)
-* [notes on casper ffg](casper-ffg.md)
+* [pos consensus mechanisms](pos_consensus_mechanisms.md)
 
 
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