diff --git a/src/redis-cli.c b/src/redis-cli.c
index b9d84c6d9..4e99e1099 100644
--- a/src/redis-cli.c
+++ b/src/redis-cli.c
@@ -2621,7 +2621,7 @@ static void repl(void) {
     /* There is no need to initialize redis HELP when we are in lua debugger mode.
      * It has its own HELP and commands (COMMAND or COMMAND DOCS will fail and got nothing).
      * We will initialize the redis HELP after the Lua debugging session ended.*/
-    if (!config.eval_ldb) {
+    if ((!config.eval_ldb) && isatty(fileno(stdin))) {
         /* Initialize the help using the results of the COMMAND command. */
         cliInitHelp();
     }