diff --git a/transport/http2_client.go b/transport/http2_client.go
index a03e92f97..d88e6be50 100644
--- a/transport/http2_client.go
+++ b/transport/http2_client.go
@@ -107,7 +107,7 @@ type http2Client struct {
 	prevGoAwayID uint32
 }
 
-func dial(fn func(context.Context, string) (net.Conn, error), ctx context.Context, addr string) (net.Conn, error) {
+func dial(ctx context.Context, fn func(context.Context, string) (net.Conn, error), addr string) (net.Conn, error) {
 	if fn != nil {
 		return fn(ctx, addr)
 	}
@@ -147,7 +147,7 @@ func isTemporary(err error) bool {
 // fails.
 func newHTTP2Client(ctx context.Context, addr string, opts ConnectOptions) (_ ClientTransport, err error) {
 	scheme := "http"
-	conn, err := dial(opts.Dialer, ctx, addr)
+	conn, err := dial(ctx, opts.Dialer, addr)
 	if err != nil {
 		return nil, connectionErrorf(true, err, "transport: %v", err)
 	}