diff --git a/c/src/exec/score/headers/thread.h b/c/src/exec/score/headers/thread.h
index 94909a3a18..654dddc825 100644
--- a/c/src/exec/score/headers/thread.h
+++ b/c/src/exec/score/headers/thread.h
@@ -247,10 +247,7 @@ void _Thread_Handler_initialization (
  *  the non-multitasking part of the system initialization.
  */
 
-void _Thread_Start_multitasking (
-  Thread_Control *system_thread,
-  Thread_Control *idle_thread
-);
+void _Thread_Start_multitasking( void );
 
 /*
  *  _Thread_Stop_multitasking
diff --git a/c/src/exec/score/include/rtems/score/thread.h b/c/src/exec/score/include/rtems/score/thread.h
index 94909a3a18..654dddc825 100644
--- a/c/src/exec/score/include/rtems/score/thread.h
+++ b/c/src/exec/score/include/rtems/score/thread.h
@@ -247,10 +247,7 @@ void _Thread_Handler_initialization (
  *  the non-multitasking part of the system initialization.
  */
 
-void _Thread_Start_multitasking (
-  Thread_Control *system_thread,
-  Thread_Control *idle_thread
-);
+void _Thread_Start_multitasking( void );
 
 /*
  *  _Thread_Stop_multitasking
diff --git a/cpukit/score/include/rtems/score/thread.h b/cpukit/score/include/rtems/score/thread.h
index 94909a3a18..654dddc825 100644
--- a/cpukit/score/include/rtems/score/thread.h
+++ b/cpukit/score/include/rtems/score/thread.h
@@ -247,10 +247,7 @@ void _Thread_Handler_initialization (
  *  the non-multitasking part of the system initialization.
  */
 
-void _Thread_Start_multitasking (
-  Thread_Control *system_thread,
-  Thread_Control *idle_thread
-);
+void _Thread_Start_multitasking( void );
 
 /*
  *  _Thread_Stop_multitasking