diff --git a/src/register/hei_hardware_register.cpp b/src/register/hei_hardware_register.cpp
index 213991d..0f994c0 100644
--- a/src/register/hei_hardware_register.cpp
+++ b/src/register/hei_hardware_register.cpp
@@ -99,7 +99,7 @@
 
 //------------------------------------------------------------------------------
 
-#ifndef __HEI_READ_ONLY
+#ifdef __HEI_ENABLE_HW_WRITE
 
 bool HardwareRegister::write(const Chip& i_chip) const
 {
@@ -135,7 +135,7 @@
     return accessFailure;
 }
 
-#endif // __HEI_READ_ONLY
+#endif // __HEI_ENABLE_HW_WRITE
 
 //------------------------------------------------------------------------------