diff --git a/hphp/runtime/ext/asio/asio_session.cpp b/hphp/runtime/ext/asio/asio_session.cpp
index 7a812af33..115ba6c6f 100644
--- a/hphp/runtime/ext/asio/asio_session.cpp
+++ b/hphp/runtime/ext/asio/asio_session.cpp
@@ -15,8 +15,8 @@
    +----------------------------------------------------------------------+
 */
 
-#include "hphp/runtime/ext/ext_asio.h"
 #include "hphp/runtime/ext/asio/asio_session.h"
+#include "hphp/runtime/ext/ext_asio.h"
 #include "hphp/system/lib/systemlib.h"
 
 namespace HPHP {