diff --git a/src/rpc/blockchain.h b/src/rpc/blockchain.h
index 544bc62c3..add335eb8 100644
--- a/src/rpc/blockchain.h
+++ b/src/rpc/blockchain.h
@@ -16,8 +16,7 @@ class UniValue;
 static constexpr int NUM_GETBLOCKSTATS_PERCENTILES = 5;
 
 /**
- * Get the difficulty of the net wrt to the given block index, or the chain tip if
- * not provided.
+ * Get the difficulty of the net wrt to the given block index.
  *
  * @return A floating point number that is a multiple of the main net minimum
  * difficulty (4295032833 hashes).