diff --git a/cfg_checker/helpers/args_utils.py b/cfg_checker/helpers/args_utils.py
index 1661c96..726c20e 100644
--- a/cfg_checker/helpers/args_utils.py
+++ b/cfg_checker/helpers/args_utils.py
@@ -19,7 +19,7 @@
         _c = args.command if hasattr(args, 'command') else ''
         _t = args.type if hasattr(args, 'type') else ''
         raise ConfigException(
-            "Argument '{}' not found executing: mcp_check {} {}".format(
+            "Argument '{}' not found executing: mcp-check {} {}".format(
                 str_arg,
                 _c,
                 _t