diff --git a/c/src/tests/libtests/cpuuse/tswitch.c b/c/src/tests/libtests/cpuuse/tswitch.c
index 9abd5f80cb..263628e13e 100644
--- a/c/src/tests/libtests/cpuuse/tswitch.c
+++ b/c/src/tests/libtests/cpuuse/tswitch.c
@@ -23,7 +23,7 @@
 
 #include "system.h"
 
-#include "cpuuse.h"
+#include <rtems/cpuuse.h>
 
 rtems_extension Task_switch( 
   rtems_tcb *unused,
diff --git a/testsuites/libtests/cpuuse/tswitch.c b/testsuites/libtests/cpuuse/tswitch.c
index 9abd5f80cb..263628e13e 100644
--- a/testsuites/libtests/cpuuse/tswitch.c
+++ b/testsuites/libtests/cpuuse/tswitch.c
@@ -23,7 +23,7 @@
 
 #include "system.h"
 
-#include "cpuuse.h"
+#include <rtems/cpuuse.h>
 
 rtems_extension Task_switch( 
   rtems_tcb *unused,