diff --git a/software.hpp b/software.hpp
index 812eca8..f8b0432 100644
--- a/software.hpp
+++ b/software.hpp
@@ -9,8 +9,8 @@ namespace uart {
 template <io::P rxPin, io::P txPin, class cfg = config<>>
 class software {
   public:
-	using data_t = typename config::data_t;
-	static constexpr auto DATA_BITS = config::DATA_BITS;
+	using data_t = typename cfg::data_t;
+	static constexpr auto DATA_BITS = cfg::DATA_BITS;
 
 	static void init() {}
 };