diff --git a/src/southbridge/intel/ibexpeak/lpc.c b/src/southbridge/intel/ibexpeak/lpc.c
index 55dcb02d9b..d4f1925c2a 100644
--- a/src/southbridge/intel/ibexpeak/lpc.c
+++ b/src/southbridge/intel/ibexpeak/lpc.c
@@ -293,7 +293,7 @@ static void mobile5_pm_init(struct device *dev)
 			/* 2010: */ 0x00188200, 0x14000016, 0xbc4abcb5, 0x00000000,
 			/* 2020: */ 0xf0c9605b, 0x13683040, 0x04c8f16e, 0x09e90170
 		};
-	for (i = 0; i < sizeof(rcba2010) / sizeof(rcba2010[0]); i++)
+	for (i = 0; i < ARRAY_SIZE(rcba2010); i++)
 	{
 		RCBA32 (0x2010 + 4 * i) = rcba2010[i];
 		RCBA32 (0x2010 + 4 * i);
@@ -331,7 +331,7 @@ static void mobile5_pm_init(struct device *dev)
 			/* 2270 */ 0x00001c01, 0x16000000, 0x00010107, 0x00160000
 		};
 
-	for (i = 0; i < sizeof(rcba2210) / sizeof(rcba2210[0]); i++)
+	for (i = 0; i < ARRAY_SIZE(rcba2210); i++)
 	{
 		RCBA32 (0x2210 + 4 * i) = rcba2210[i];
 		RCBA32 (0x2210 + 4 * i);
@@ -344,7 +344,7 @@ static void mobile5_pm_init(struct device *dev)
 			/* 2320: */ 0xcccc0cfc, 0x0fbb0fff
 		};
 
-	for (i = 0; i < sizeof(rcba2300) / sizeof(rcba2300[0]); i++)
+	for (i = 0; i < ARRAY_SIZE(rcba2300); i++)
 	{
 		RCBA32 (0x2300 + 4 * i) = rcba2300[i];
 		RCBA32 (0x2300 + 4 * i);