diff --git a/docs/cmdline-opts/cookie.d b/docs/cmdline-opts/cookie.d
index 3ae697548d..1e9906977e 100644
--- a/docs/cmdline-opts/cookie.d
+++ b/docs/cmdline-opts/cookie.d
@@ -1,6 +1,6 @@
 Short: b
 Long: cookie
-Arg: <data>
+Arg: <data|filename>
 Protocols: HTTP
 Help: Send cookies from string/file
 ---
diff --git a/src/tool_help.c b/src/tool_help.c
index 542998bd03..8a3c258203 100644
--- a/src/tool_help.c
+++ b/src/tool_help.c
@@ -80,7 +80,7 @@ static const struct helptxt helptext[] = {
    "Connect to host"},
   {"-C, --continue-at <offset>",
    "Resumed transfer offset"},
-  {"-b, --cookie <data>",
+  {"-b, --cookie <data|filename>",
    "Send cookies from string/file"},
   {"-c, --cookie-jar <filename>",
    "Write cookies to <filename> after operation"},