diff --git a/src/helpers/CommonCLI.cpp b/src/helpers/CommonCLI.cpp
index f3f7727c..29b3a4e2 100644
--- a/src/helpers/CommonCLI.cpp
+++ b/src/helpers/CommonCLI.cpp
@@ -358,6 +358,6 @@ void CommonCLI::handleCommand(uint32_t sender_timestamp, const char* command, ch
       _callbacks->dumpLogFile();
       strcpy(reply, "   EOF");
     } else {
-      sprintf(reply, "Unknown: %s", command);
+      strcpy(reply, "Unknown command");
     }
 }