diff --git a/io.hpp b/io.hpp
index 10a0b99..7b91716 100644
--- a/io.hpp
+++ b/io.hpp
@@ -209,7 +209,7 @@ static constexpr auto getPIN(const Bus bus)
 //////////////////////////////////////////////////////////////////////////
 // Zero overhead Pin object for pretty code without losing performance
 
-template <const P pin>
+template <P pin>
 class Pin {
   public:
 	// Pin objects cannot be moved or copied
@@ -301,7 +301,7 @@ class Pin {
 //////////////////////////////////////////////////////////////////////////
 // Zero overhead Port object for pretty code without losing performance
 
-template <const Bus port>
+template <Bus port>
 class Port {
   public:
 	// Port objects cannot be moved or copied