From c8d8e7ac9394ea2f9a88f3cb94b52cbc98503732 Mon Sep 17 00:00:00 2001
From: Leonardo de Moura <leonardo@microsoft.com>
Date: Thu, 4 Dec 2014 16:00:33 -0800
Subject: [PATCH] chore(library/definitional/equations): fix style

---
 src/library/definitional/equations.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/library/definitional/equations.cpp b/src/library/definitional/equations.cpp
index 1b8175cf7..67cf95af2 100644
--- a/src/library/definitional/equations.cpp
+++ b/src/library/definitional/equations.cpp
@@ -4,6 +4,7 @@ Released under Apache 2.0 license as described in the file LICENSE.
 
 Author: Leonardo de Moura
 */
+#include <string>
 #include "kernel/expr.h"
 #include "library/kernel_serializer.h"