diff --git a/drivers/edac/amd64_edac.c b/drivers/edac/amd64_edac.c
index 9cd86390a167..10119cf27ffd 100644
--- a/drivers/edac/amd64_edac.c
+++ b/drivers/edac/amd64_edac.c
@@ -4130,6 +4130,7 @@ static int per_family_init(struct amd64_pvt *pvt)
 			break;
 		case 0x70 ... 0x7f:
 			pvt->ctl_name			= "F19h_M70h";
+			pvt->max_mcs			= 4;
 			pvt->flags.zn_regs_v2		= 1;
 			break;
 		case 0xa0 ... 0xaf: