diff --git a/lisp/progmodes/lua-ts-mode.el b/lisp/progmodes/lua-ts-mode.el
index fdc3f7a6d14..8d0f49c2d89 100644
--- a/lisp/progmodes/lua-ts-mode.el
+++ b/lisp/progmodes/lua-ts-mode.el
@@ -117,7 +117,7 @@
 (defcustom lua-ts-indent-continuation-lines t
   "Controls how multi-line if/else statements are aligned.
 
-If t, then continuation lines are indented by `lua-ts-indent-offset':
+If non-nil, then continuation lines are indented by `lua-ts-indent-offset':
 
   if a
       and b then