Input is optional, reads from stdin if not specified.

1 files changed, 1 insertions, 1 deletions

diff --git a/mkelf.lua b/mkelf.lua
index 4c1387a..5869a6a 100644
--- a/mkelf.lua
+++ b/mkelf.lua
@@ -7,7 +7,7 @@ local function die(fmt, ...)
 end
 
 local function usage()
-    die("[-o output] input")
+    die("[-o output] [input]")
 end
 
 ---@param fn string|nil