diff --git a/modules/type/blocks/dap_chain_cs_blocks.c b/modules/type/blocks/dap_chain_cs_blocks.c
index fe85e5a88e971df045f0e24b5794a08c818e4ccf..c181a72b5584fe44eae450e228876f060fd52a43 100644
--- a/modules/type/blocks/dap_chain_cs_blocks.c
+++ b/modules/type/blocks/dap_chain_cs_blocks.c
@@ -213,11 +213,10 @@ int dap_chain_cs_blocks_init()
 
         "Reward for block signs:\n"
             "block -net <net_name> [-chain <chain_name>] reward set"
-            " -cert <poa_cert_name> -value <value>\n"
+            " -poa_cert <poa_cert_name> -value <value>\n"
                 "\t\t Set base reward for sign for one block at one minute\n\n"
 
-            "block -net <net_name> [-chain <chain_name>] reward show"
-            " -cert <poa_cert_name> -value <value>\n"
+            "block -net <net_name> [-chain <chain_name>] reward show\n"
                 "\t\t Show base reward for sign for one block at one minute\n\n"
 
             "block -net <net_name> [-chain <chain_name>] reward collect"