diff --git a/README.md b/README.md
index 4f87393..a2147b0 100644
--- a/README.md
+++ b/README.md
@@ -38,6 +38,8 @@ Flags:
       --method=GET        The HTTP request method (GET, POST, PUT, PATCH or
                           DELETE).
   -b, --body="{data..."   HTTP request body.
+  -h, --header="k:v" ...  HTTP request header(s). You can set more than one
+                          header by repeating this flag.
       --trust-all         Omit SSL certificate validation.
   -f, --format=default    Load test report format. Either 'default' (verbose),
                           'json' or 'yaml'. When json or yaml is specified,
diff --git a/args.go b/args.go
index d8c1692..437b0d2 100644
--- a/args.go
+++ b/args.go
@@ -56,7 +56,7 @@ func parseArgs() (common.Config, error) {
 			Int(),
 		Method:   app.Flag("method", "The HTTP request method (GET, POST, PUT, PATCH or DELETE).").Default("GET").Enum("GET", "POST", "PUT", "PATCH", "DELETE"),
 		Body:     parseRequestBody(app.Flag("body", "HTTP request body.").Short('b').PlaceHolder("\"{data...\"")),
-		Headers:  parseRequestHeaders(kingpin.Flag("header", "HTTP request header(s). You can set more than one header by repeating this flag.").Short('h').PlaceHolder("\"k:v\"")),
+		Headers:  parseRequestHeaders(app.Flag("header", "HTTP request header(s). You can set more than one header by repeating this flag.").Short('h').PlaceHolder("\"k:v\"")),
 		TrustAll: app.Flag("trust-all", "Omit SSL certificate validation.").Bool(),
 		Format: app.Flag("format", "Load test report format. Either 'default' (verbose), 'json' or 'yaml'. When json or yaml is specified, apart from the load test results, no additional info will be written to std out.").
 			Short('f').