diff --git a/include/fc/io/fstream.hpp b/include/fc/io/fstream.hpp
index 481c051..9a0c99d 100644
--- a/include/fc/io/fstream.hpp
+++ b/include/fc/io/fstream.hpp
@@ -2,11 +2,8 @@
 #include <fc/shared_ptr.hpp>
 #include <fc/filesystem.hpp>
 #include <fc/io/iostream.hpp>
-
 #include <fstream>
 
-using namespace std;
-
 namespace fc {
   class path;
   class ofstream : virtual public ostream {
diff --git a/src/io/fstream.cpp b/src/io/fstream.cpp
index 031026b..042791d 100644
--- a/src/io/fstream.cpp
+++ b/src/io/fstream.cpp
@@ -10,6 +10,8 @@
 #include <boost/filesystem/path.hpp>
 #include <boost/filesystem/fstream.hpp>
 
+using namespace std;
+
 namespace fc {
    class ofstream::impl : public fc::retainable {
       public: