diff --git a/docs/cmdline-opts/cacert.d b/docs/cmdline-opts/cacert.d
index 04e113980e..b2ecf9088f 100644
--- a/docs/cmdline-opts/cacert.d
+++ b/docs/cmdline-opts/cacert.d
@@ -1,5 +1,5 @@
 Long: cacert
-Arg: <CA certificate>
+Arg: <file>
 Help: CA certificate to verify peer against
 Protocols: TLS
 ---
diff --git a/scripts/zsh.pl b/scripts/zsh.pl
index f0d8c195f4..82b4d9fa2d 100755
--- a/scripts/zsh.pl
+++ b/scripts/zsh.pl
@@ -54,10 +54,11 @@ sub parse_main_opts {
         $option .= '}' if defined $short;
         $option .= '\'[' . trim($desc) . ']\'' if defined $desc;
 
-        $option .= ":$arg" if defined $arg;
+        $option .= ":'$arg'" if defined $arg;
 
         $option .= ':_files'
-            if defined $arg and ($arg eq 'FILE' || $arg eq 'DIR');
+            if defined $arg and ($arg eq '<file>' || $arg eq '<filename>'
+                || $arg eq '<dir>');
 
         push @list, $option;
     }
diff --git a/src/tool_help.c b/src/tool_help.c
index 42dc779595..a5bfaba24e 100644
--- a/src/tool_help.c
+++ b/src/tool_help.c
@@ -54,7 +54,7 @@ static const struct helptxt helptext[] = {
    "Append to target file when uploading"},
   {"    --basic",
    "Use HTTP Basic Authentication"},
-  {"    --cacert <CA certificate>",
+  {"    --cacert <file>",
    "CA certificate to verify peer against"},
   {"    --capath <dir>",
    "CA directory to verify peer against"},