diff --git a/hypervisor/arch/x86/configs/apl-mrb.config b/hypervisor/arch/x86/configs/apl-mrb.config
index 67a59849a..5e87dc17f 100644
--- a/hypervisor/arch/x86/configs/apl-mrb.config
+++ b/hypervisor/arch/x86/configs/apl-mrb.config
@@ -1,3 +1,5 @@
 CONFIG_BOARD="apl-mrb"
 # CONFIG_PLATFORM_UEFI is not set
 CONFIG_PLATFORM_SBL=y
+CONFIG_COM_BASE=0x3e8
+CONFIG_COM_IRQ=6