diff --git a/truenas_checkmk_agent_20250622225721.py b/truenas_checkmk_agent_20250622225721.py
index 7059e96..63123de 100644
--- a/truenas_checkmk_agent_20250622225721.py
+++ b/truenas_checkmk_agent_20250622225721.py
@@ -1089,7 +1089,7 @@ if __name__ == "__main__":
 
     def _args_error(message):
         print("#"*35)
-        print("checkmk_agent for opnsense")
+        print("checkmk_agent for TrueNAS")
         print(f"Version: {__VERSION__}")
         print("#"*35)
         print(message)