diff --git a/hypervisor/arch/x86/configs/up2.config b/hypervisor/arch/x86/configs/up2.config
index f0506f9f9..ee8a25c63 100644
--- a/hypervisor/arch/x86/configs/up2.config
+++ b/hypervisor/arch/x86/configs/up2.config
@@ -2,3 +2,4 @@
 CONFIG_BOARD="UP2"
 CONFIG_SERIAL_PCI=y
 CONFIG_SERIAL_PCI_BDF=0x00C1
+CONFIG_COM_IRQ=6