diff --git a/src/drivers/i2c/ptn3460/ptn3460.c b/src/drivers/i2c/ptn3460/ptn3460.c
index 31db8ad7fe..d2df04d216 100644
--- a/src/drivers/i2c/ptn3460/ptn3460.c
+++ b/src/drivers/i2c/ptn3460/ptn3460.c
@@ -123,7 +123,7 @@ static void ptn3460_init(struct device *dev)
 	init_done = true;
 }
 
-__weak enum cb_err mb_get_edid(uint8_t edid_data[0x80])
+__weak enum cb_err mb_get_edid(uint8_t edid_data[PTN_EDID_LEN])
 {
 	return CB_ERR;
 }
diff --git a/src/drivers/i2c/ptn3460/ptn3460.h b/src/drivers/i2c/ptn3460/ptn3460.h
index 5d867cdd46..ecd2191f39 100644
--- a/src/drivers/i2c/ptn3460/ptn3460.h
+++ b/src/drivers/i2c/ptn3460/ptn3460.h
@@ -52,7 +52,7 @@ struct ptn_3460_flash {
 
 /* We need functions which we can call to get mainboard specific data */
 /* These functions can be implemented somewhere else but must exist. */
-extern enum cb_err mb_get_edid(uint8_t edid_data[0x80]);
+extern enum cb_err mb_get_edid(uint8_t edid_data[PTN_EDID_LEN]);
 extern uint8_t mb_select_edid_table(void);
 extern enum cb_err mb_adjust_cfg(struct ptn_3460_config *cfg_ptr);
 
diff --git a/src/mainboard/siemens/mc_apl1/variants/mc_apl1/lcd_panel.c b/src/mainboard/siemens/mc_apl1/variants/mc_apl1/lcd_panel.c
index 0fce19c80b..8a20f364d5 100644
--- a/src/mainboard/siemens/mc_apl1/variants/mc_apl1/lcd_panel.c
+++ b/src/mainboard/siemens/mc_apl1/variants/mc_apl1/lcd_panel.c
@@ -10,7 +10,7 @@
  * @param  edid_data  pointer to EDID data in driver
  * @return CB_SUCCESS on successful EDID data retrieval, CB_ERR otherwise
  */
-enum cb_err mb_get_edid(uint8_t edid_data[0x80])
+enum cb_err mb_get_edid(uint8_t edid_data[PTN_EDID_LEN])
 {
 	const char *hwi_block = "hwinfo.hex";
 
diff --git a/src/mainboard/siemens/mc_apl1/variants/mc_apl4/lcd_panel.c b/src/mainboard/siemens/mc_apl1/variants/mc_apl4/lcd_panel.c
index d5de17dd52..39cc274e21 100644
--- a/src/mainboard/siemens/mc_apl1/variants/mc_apl4/lcd_panel.c
+++ b/src/mainboard/siemens/mc_apl1/variants/mc_apl4/lcd_panel.c
@@ -10,7 +10,7 @@
  * @param  edid_data  pointer to EDID data in driver
  * @return CB_SUCCESS on successful EDID data retrieval, CB_ERR otherwise
  */
-enum cb_err mb_get_edid(uint8_t edid_data[0x80])
+enum cb_err mb_get_edid(uint8_t edid_data[PTN_EDID_LEN])
 {
 	const char *hwi_block = "hwinfo.hex";
 
diff --git a/src/mainboard/siemens/mc_apl1/variants/mc_apl5/lcd_panel.c b/src/mainboard/siemens/mc_apl1/variants/mc_apl5/lcd_panel.c
index 348f7622ae..c74e90ab61 100644
--- a/src/mainboard/siemens/mc_apl1/variants/mc_apl5/lcd_panel.c
+++ b/src/mainboard/siemens/mc_apl1/variants/mc_apl5/lcd_panel.c
@@ -33,7 +33,7 @@ static void igd_disable(void)
  * @param  edid_data  pointer to EDID data in driver
  * @return CB_SUCCESS on successful EDID data retrieval, CB_ERR otherwise
  */
-enum cb_err mb_get_edid(uint8_t edid_data[0x80])
+enum cb_err mb_get_edid(uint8_t edid_data[PTN_EDID_LEN])
 {
 	const char *hwi_block = "hwinfo.hex";
 
diff --git a/src/mainboard/siemens/mc_apl1/variants/mc_apl7/lcd_panel.c b/src/mainboard/siemens/mc_apl1/variants/mc_apl7/lcd_panel.c
index d5de17dd52..39cc274e21 100644
--- a/src/mainboard/siemens/mc_apl1/variants/mc_apl7/lcd_panel.c
+++ b/src/mainboard/siemens/mc_apl1/variants/mc_apl7/lcd_panel.c
@@ -10,7 +10,7 @@
  * @param  edid_data  pointer to EDID data in driver
  * @return CB_SUCCESS on successful EDID data retrieval, CB_ERR otherwise
  */
-enum cb_err mb_get_edid(uint8_t edid_data[0x80])
+enum cb_err mb_get_edid(uint8_t edid_data[PTN_EDID_LEN])
 {
 	const char *hwi_block = "hwinfo.hex";
 
diff --git a/src/mainboard/siemens/mc_ehl/variants/mc_ehl3/lcd_panel.c b/src/mainboard/siemens/mc_ehl/variants/mc_ehl3/lcd_panel.c
index 7b162540aa..316eb71eba 100644
--- a/src/mainboard/siemens/mc_ehl/variants/mc_ehl3/lcd_panel.c
+++ b/src/mainboard/siemens/mc_ehl/variants/mc_ehl3/lcd_panel.c
@@ -10,7 +10,7 @@
  * @param  edid_data  pointer to EDID data in driver
  * @return CB_SUCCESS on successful EDID data retrieval, CB_ERR otherwise
  */
-enum cb_err mb_get_edid(uint8_t edid_data[0x80])
+enum cb_err mb_get_edid(uint8_t edid_data[PTN_EDID_LEN])
 {
 	const char *hwi_block = "hwinfo.hex";