diff --git a/physical.hpp b/physical.hpp
index e588de2..67a900b 100644
--- a/physical.hpp
+++ b/physical.hpp
@@ -12,10 +12,7 @@
 {
 namespace led
 {
-/** @brief Assert LED by writing 255 */
-constexpr unsigned long ASSERT = 255;
-
-/** @brief De-assert by writing "0" */
+/** @brief De-assert value */
 constexpr unsigned long DEASSERT = 0;
 
 /** @class Physical
@@ -69,6 +66,9 @@
      */
     SysfsLed& led;
 
+    /** @brief The value that will assert the LED */
+    unsigned long assert;
+
     /** @brief The period that the LED will operate on, in milliseconds
      *  Will be removed when periodicity is put into interface
      */