diff --git a/ThirdParty/Brent/brent.cpp b/ThirdParty/Brent/brent.cpp
index 0d0a9db35..f1c38f1d1 100644
--- a/ThirdParty/Brent/brent.cpp
+++ b/ThirdParty/Brent/brent.cpp
@@ -3,7 +3,7 @@
 # include <cmath>
 # include <ctime>
 
-using namespace std;
+   using namespace std;
 
 # include "brent.hpp"