1 files changed, 7 insertions, 3 deletions

diff --git a/mask.h b/mask.h
index e7febeb0..13ab57b5 100644
--- a/mask.h
+++ b/mask.h
@@ -8,24 +8,28 @@
 
 #include <boost/regex.hpp>
 
+namespace ledger {
+
 class mask_t
 {
  public:
   bool	       exclude;
   boost::regex expr;
 
-  explicit mask_t(const std::string& pattern);
+  explicit mask_t(const string& pattern);
   mask_t(const mask_t& m) : exclude(m.exclude), expr(m.expr) {}
 
-  bool match(const std::string& str) const {
+  bool match(const string& str) const {
     return boost::regex_match(str, expr) && ! exclude;
   }
 };
 
 class mask_error : public error {
  public:
-  mask_error(const std::string& _reason) throw() : error(_reason) {}
+  mask_error(const string& _reason) throw() : error(_reason) {}
   virtual ~mask_error() throw() {}
 };
 
+} // namespace ledger
+
 #endif // _MASK_H