diff --git a/src/init.cpp b/src/init.cpp
index 9c9f36329..9cdd3a034 100644
--- a/src/init.cpp
+++ b/src/init.cpp
@@ -602,6 +602,8 @@ std::string HelpMessage(HelpMessageMode mode)
     strUsage += HelpMessageOpt("-ac_private", _("Shielded transactions only (except coinbase + notaries), default is 0"));
     strUsage += HelpMessageOpt("-ac_pubkey", _("Public key for receiving payments on the network"));
     strUsage += HelpMessageOpt("-ac_public", _("Transparent transactions only, default 0"));
+    strUsage += HelpMessageOpt("-ac_randomx_interval", _("Controls how often the RandomX key block will change, default is 1024"));
+    strUsage += HelpMessageOpt("-ac_randomx_lag", _("Sets the number of RandomX blocks to wait before updating the key block, default is 64"));
     strUsage += HelpMessageOpt("-ac_reward", _("Block reward in satoshis, default is 0"));
     strUsage += HelpMessageOpt("-ac_sapling", _("Sapling activation block height"));
     strUsage += HelpMessageOpt("-ac_script", _("P2SH/multisig address to receive founders rewards"));