diff --git a/cpukit/include/rtems/score/isrlock.h b/cpukit/include/rtems/score/isrlock.h
index 5e74e6b1c9..b78b656e6b 100644
--- a/cpukit/include/rtems/score/isrlock.h
+++ b/cpukit/include/rtems/score/isrlock.h
@@ -138,21 +138,6 @@ typedef struct {
   #define ISR_LOCK_DECLARE( _qualifier, _designator )
 #endif
 
-/**
- * @brief Defines an ISR lock variable reference.
- *
- * Do not add a ';' after this macro.
- *
- * @param _designator The designator for the interrupt lock reference.
- * @param _target The target for the interrupt lock reference.
- */
-#if defined( RTEMS_SMP )
-  #define ISR_LOCK_REFERENCE( _designator, _target ) \
-    ISR_lock_Control *_designator = _target;
-#else
-  #define ISR_LOCK_REFERENCE( _designator, _target )
-#endif
-
 /**
  * @brief Initializer for static initialization of ISR locks.
  *