diff --git a/include/boost/utf8_codecvt_facet.hpp b/include/boost/utf8_codecvt_facet.hpp
index f25a41e..b7a9b7a 100644
--- a/include/boost/utf8_codecvt_facet.hpp
+++ b/include/boost/utf8_codecvt_facet.hpp
@@ -67,7 +67,7 @@ namespace std{
 #define MB_LENGTH_MAX 8
 
 struct utf8_codecvt_facet_wchar_t :
-	public std::codecvt<wchar_t, char, std::mbstate_t>  
+    public std::codecvt<wchar_t, char, std::mbstate_t>  
 {
 public:
     explicit utf8_codecvt_facet_wchar_t(std::size_t no_locale_manage = 0)