diff --git a/src/Pecee/SimpleRouter/Route/RouteGroup.php b/src/Pecee/SimpleRouter/Route/RouteGroup.php
index 100a5d2..fbd9a97 100644
--- a/src/Pecee/SimpleRouter/Route/RouteGroup.php
+++ b/src/Pecee/SimpleRouter/Route/RouteGroup.php
@@ -182,7 +182,7 @@ class RouteGroup extends Route implements IGroupRoute
      * @param bool $merge
      * @return static
      */
-    public function setMergeExceptionHandlers(bool $merge): self
+    public function setMergeExceptionHandlers(bool $merge): IGroupRoute
     {
         $this->mergeExceptionHandlers = $merge;