diff --git a/y2018/joystick_reader.cc b/y2018/joystick_reader.cc
index be7be1f..f71aec3 100644
--- a/y2018/joystick_reader.cc
+++ b/y2018/joystick_reader.cc
@@ -1,4 +1,3 @@
-#include <google/protobuf/stubs/stringprintf.h>
 #include <unistd.h>
 
 #include <cmath>
@@ -6,6 +5,8 @@
 #include <cstring>
 #include <mutex>
 
+#include <google/protobuf/stubs/stringprintf.h>
+
 #include "aos/actions/actions.h"
 #include "aos/init.h"
 #include "aos/logging/logging.h"