diff --git a/container.go b/container.go
index 75a3c32..b1cf5ff 100644
--- a/container.go
+++ b/container.go
@@ -7,7 +7,6 @@ import (
 	"net/http/httptest"
 	"os"
 	"reflect"
-	"slices"
 
 	"github.com/emicklei/go-restful/v3"
 	"github.com/go-openapi/spec"
@@ -226,5 +225,5 @@ func (c *Container) NewWS() WS {
 }
 
 func (c *Container) RouteAPI(f any, opts ...opt.RouteAPIOpts) opt.RouteFunc {
-	return opt.RouteAPI(f, slices.Concat([]opt.RouteAPIOpts{opt.WithLogger(c.logger)}, opts)...)
+	return opt.RouteAPI(f, append([]opt.RouteAPIOpts{opt.WithLogger(c.logger)}, opts...)...)
 }