diff --git a/cpukit/include/rtems/rtems/timerimpl.h b/cpukit/include/rtems/rtems/timerimpl.h
index 5941616d61..181cbb040b 100644
--- a/cpukit/include/rtems/rtems/timerimpl.h
+++ b/cpukit/include/rtems/rtems/timerimpl.h
@@ -60,7 +60,9 @@ extern "C" {
  */
 
 typedef struct Timer_server_Control {
-  ISR_LOCK_MEMBER( Lock )
+#if ISR_LOCK_NEEDS_OBJECT
+  ISR_lock_Control Lock;
+#endif
 
   Chain_Control Pending;
 
diff --git a/cpukit/include/rtems/score/chainimpl.h b/cpukit/include/rtems/score/chainimpl.h
index a2ea5e2645..22ef633f11 100644
--- a/cpukit/include/rtems/score/chainimpl.h
+++ b/cpukit/include/rtems/score/chainimpl.h
@@ -1012,7 +1012,9 @@ static inline void _Chain_Iterator_registry_update(
  * typedef struct {
  *   Chain_Control           Chain;
  *   Chain_Iterator_registry Iterators;
- *   ISR_LOCK_MEMBER(        Lock )
+ * #if ISR_LOCK_NEEDS_OBJECT
+ *   ISR_lock_Control        Lock;
+ * #endif
  * } Some_Control;
  *
  * void iterate(
diff --git a/cpukit/include/rtems/score/isrlock.h b/cpukit/include/rtems/score/isrlock.h
index 8732a00fc6..eb79fa009d 100644
--- a/cpukit/include/rtems/score/isrlock.h
+++ b/cpukit/include/rtems/score/isrlock.h
@@ -110,19 +110,6 @@ typedef struct {
 #endif
 } ISR_lock_Context;
 
-/**
- * @brief Defines an ISR lock member.
- *
- * Do not add a ';' after this macro.
- *
- * @param _designator The designator for the interrupt lock.
- */
-#if defined( RTEMS_SMP )
-  #define ISR_LOCK_MEMBER( _designator ) ISR_lock_Control _designator;
-#else
-  #define ISR_LOCK_MEMBER( _designator )
-#endif
-
 /**
  * @brief Initializer for static initialization of ISR locks.
  *
diff --git a/cpukit/include/rtems/score/thread.h b/cpukit/include/rtems/score/thread.h
index 8ca7d85205..1042607bba 100644
--- a/cpukit/include/rtems/score/thread.h
+++ b/cpukit/include/rtems/score/thread.h
@@ -542,7 +542,9 @@ typedef struct {
  * @brief Information required to manage a thread timer.
  */
 typedef struct {
-  ISR_LOCK_MEMBER( Lock )
+#if ISR_LOCK_NEEDS_OBJECT
+  ISR_lock_Control Lock;
+#endif
   Watchdog_Header *header;
   Watchdog_Control Watchdog;
 } Thread_Timer_information;