diff --git a/DCC.h b/DCC.h
index 283b406..fea9a1a 100644
--- a/DCC.h
+++ b/DCC.h
@@ -23,7 +23,7 @@
 #include "MotorDrivers.h"
 #include "FSH.h"
 
-#include "config.h"
+#include "defines.h"
 #ifndef HIGHEST_SHORT_ADDR
 #define HIGHEST_SHORT_ADDR 127
 #else
@@ -31,7 +31,7 @@
 #error short addr greater than 127 does not make sense
 #endif
 #endif
-#define LONG_ADDR_MARKER 0x4000
+const uint16_t LONG_ADDR_MARKER = 0x4000;
 
 typedef void (*ACK_CALLBACK)(int16_t result);