diff --git a/test/signal.cpp b/test/signal.cpp
index d060861..3ca2695 100644
--- a/test/signal.cpp
+++ b/test/signal.cpp
@@ -1,8 +1,11 @@
-#include <cstring>
-#include <gtest/gtest.h>
 #include <signal.h>
+
 #include <stdplus/signal.hpp>
 
+#include <cstring>
+
+#include <gtest/gtest.h>
+
 namespace stdplus
 {
 namespace signal