diff --git a/src/storage.cpp b/src/storage.cpp
index ae79fabe3..e3ecb7ece 100755
--- a/src/storage.cpp
+++ b/src/storage.cpp
@@ -144,7 +144,7 @@ namespace
 		return true;
 	}
 
-	BOOST_FILESYSTEM_DECL boost::intmax_t file_size_win( const path & ph )
+	boost::intmax_t file_size_win( const path & ph )
 	{
 		std::wstring wpath(safe_convert(ph.string()));
 		// by now, intmax_t is 64-bits on all Windows compilers