diff --git a/src/soc/intel/skylake/vr_config.c b/src/soc/intel/skylake/vr_config.c
index 2be9c7175d..da2bfc8af2 100644
--- a/src/soc/intel/skylake/vr_config.c
+++ b/src/soc/intel/skylake/vr_config.c
@@ -227,7 +227,7 @@ static uint16_t get_sku_icc_max(int domain)
 		return icc_max[domain];
 	}
 	default:
-		printk(BIOS_ERR, "ERROR: Unknown MCH (%u) in VR-config\n", mch_id);
+		printk(BIOS_ERR, "ERROR: Unknown MCH (0x%x) in VR-config\n", mch_id);
 	}
 	return 0;
 }
@@ -297,7 +297,7 @@ static uint16_t get_sku_ac_dc_loadline(const int domain)
 		return loadline[domain];
 	}
 	default:
-		printk(BIOS_ERR, "ERROR: Unknown MCH (%u) in VR-config\n", mch_id);
+		printk(BIOS_ERR, "ERROR: Unknown MCH (0x%x) in VR-config\n", mch_id);
 	}
 	return 0;
 }