diff --git a/c/src/exec/posix/src/ptimer.c b/c/src/exec/posix/src/ptimer.c
index ff65297f96..ac11a5cd37 100644
--- a/c/src/exec/posix/src/ptimer.c
+++ b/c/src/exec/posix/src/ptimer.c
@@ -191,6 +191,8 @@ void _POSIX_Timer_Manager_initialization ( int max_timers )
 
    for (index=0; index<max_timers; index++)
      TIMER_INITIALIZE_S( index );
+
+   timer_max = max_timers;
 }
 
 /* ***************************************************************************
diff --git a/cpukit/posix/src/ptimer.c b/cpukit/posix/src/ptimer.c
index ff65297f96..ac11a5cd37 100644
--- a/cpukit/posix/src/ptimer.c
+++ b/cpukit/posix/src/ptimer.c
@@ -191,6 +191,8 @@ void _POSIX_Timer_Manager_initialization ( int max_timers )
 
    for (index=0; index<max_timers; index++)
      TIMER_INITIALIZE_S( index );
+
+   timer_max = max_timers;
 }
 
 /* ***************************************************************************