diff --git a/post/lib_powerpc/two.c b/post/lib_powerpc/two.c
index 2b11147..7f08880 100644
--- a/post/lib_powerpc/two.c
+++ b/post/lib_powerpc/two.c
@@ -81,8 +81,7 @@
 	~5
     },
 };
-static unsigned int cpu_post_two_size =
-    sizeof (cpu_post_two_table) / sizeof (struct cpu_post_two_s);
+static unsigned int cpu_post_two_size = ARRAY_SIZE(cpu_post_two_table);
 
 int cpu_post_test_two (void)
 {