diff --git a/drivers/platform/x86/mlx-platform.c b/drivers/platform/x86/mlx-platform.c
index 454e14f02285..71b452a89a6e 100644
--- a/drivers/platform/x86/mlx-platform.c
+++ b/drivers/platform/x86/mlx-platform.c
@@ -85,6 +85,9 @@
 #define MLXPLAT_CPLD_FAN_MASK		GENMASK(3, 0)
 #define MLXPLAT_CPLD_FAN_NG_MASK	GENMASK(5, 0)
 
+/* Number of channels in group */
+#define MLXPLAT_CPLD_GRP_CHNL_NUM		8
+
 /* Start channel numbers */
 #define MLXPLAT_CPLD_CH1			2
 #define MLXPLAT_CPLD_CH2			10
@@ -124,7 +127,7 @@ static const struct resource mlxplat_lpc_resources[] = {
 };
 
 /* Platform default channels */
-static const int mlxplat_default_channels[][8] = {
+static const int mlxplat_default_channels[][MLXPLAT_CPLD_GRP_CHNL_NUM] = {
 	{
 		MLXPLAT_CPLD_CH1, MLXPLAT_CPLD_CH1 + 1, MLXPLAT_CPLD_CH1 + 2,
 		MLXPLAT_CPLD_CH1 + 3, MLXPLAT_CPLD_CH1 + 4, MLXPLAT_CPLD_CH1 +