diff --git a/src/daemon/command_server.cpp b/src/daemon/command_server.cpp
index 12f7c5fa4..9df698547 100644
--- a/src/daemon/command_server.cpp
+++ b/src/daemon/command_server.cpp
@@ -231,7 +231,7 @@ t_command_server::t_command_server(
     m_command_lookup.set_handler(
       "print_coinbase_tx_sum"
     , std::bind(&t_command_parser_executor::print_coinbase_tx_sum, &m_parser, p::_1)
-    , "Print sum of coinbase transactions (start height, block count)"
+    , "Print sum of coinbase transactions <start height> [block count]"
     );
     m_command_lookup.set_handler(
       "alt_chain_info"