diff --git a/src/init.cpp b/src/init.cpp
index 5bf399197a24..cac383a24a34 100644
--- a/src/init.cpp
+++ b/src/init.cpp
@@ -592,6 +592,7 @@ std::string HelpMessage(HelpMessageMode mode)
     strUsage += HelpMessageOpt("-mnconf=<file>", strprintf(_("Specify masternode configuration file (default: %s)"), "masternode.conf"));
     strUsage += HelpMessageOpt("-mnconflock=<n>", strprintf(_("Lock masternodes from masternode configuration file (default: %u)"), 1));
     strUsage += HelpMessageOpt("-masternodeprivkey=<n>", _("Set the masternode private key"));
+    strUsage += HelpMessageOpt("-masternodeblsprivkey=<hex>", _("Set the masternode BLS private key"));
 
 #ifdef ENABLE_WALLET
     strUsage += HelpMessageGroup(_("PrivateSend options:"));