diff --git a/tests/base/filename_test.cpp b/tests/base/filename_test.cpp
index 5f8bf45..162c622 100644
--- a/tests/base/filename_test.cpp
+++ b/tests/base/filename_test.cpp
@@ -1,8 +1,8 @@
 #include <doctest/doctest.h>
 #include <a4z/filename.hpp>
 
-#include <string>
 #include <ostream>
+#include <string>
 
 SCENARIO("Check find slashes") {
   GIVEN("a string with more than 2 slashes") {