diff --git a/utils_unittest.cc b/utils_unittest.cc
index fa97f55..a9ce287 100644
--- a/utils_unittest.cc
+++ b/utils_unittest.cc
@@ -2,9 +2,9 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
+#include <errno.h>
 #include <sys/stat.h>
 #include <sys/types.h>
-#include <errno.h>
 
 #include <map>
 #include <string>