diff --git a/testsuites/psxtests/psx05/system.h b/testsuites/psxtests/psx05/system.h
index 52d6f4957e..58265150c3 100644
--- a/testsuites/psxtests/psx05/system.h
+++ b/testsuites/psxtests/psx05/system.h
@@ -42,8 +42,6 @@ void *Task_3(
 
 #define CONFIGURE_POSIX_INIT_THREAD_TABLE
 
-#define CONFIGURE_DISABLE_SMP_CONFIGURATION
-
 #include <rtems/confdefs.h>
 
 /* global variables */