diff --git a/OvmfPkg/Include/IndustryStandard/CloudHv.h b/OvmfPkg/Include/IndustryStandard/CloudHv.h
index d31ecc9eec..527c236f48 100644
--- a/OvmfPkg/Include/IndustryStandard/CloudHv.h
+++ b/OvmfPkg/Include/IndustryStandard/CloudHv.h
@@ -16,12 +16,12 @@
 //
 // ACPI timer address
 //
-#define CLOUDHV_ACPI_TIMER_IO_ADDRESS  0xb008
+#define CLOUDHV_ACPI_TIMER_IO_ADDRESS  0x0608
 
 //
 // ACPI shutdown device address
 //
-#define CLOUDHV_ACPI_SHUTDOWN_IO_ADDRESS  0x03c0
+#define CLOUDHV_ACPI_SHUTDOWN_IO_ADDRESS  0x0600
 
 //
 // 32-bit MMIO memory hole base address