diff --git a/test/str/cat.cpp b/test/str/cat.cpp
index 1633f6e..758facc 100644
--- a/test/str/cat.cpp
+++ b/test/str/cat.cpp
@@ -1,8 +1,10 @@
-#include <gtest/gtest.h>
 #include <stdplus/str/cat.hpp>
+
 #include <string>
 #include <string_view>
 
+#include <gtest/gtest.h>
+
 namespace stdplus
 {