diff --git a/OvmfPkg/AcpiTables/Platform.h b/OvmfPkg/AcpiTables/Platform.h
index c9aa547067..a79bfd8703 100644
--- a/OvmfPkg/AcpiTables/Platform.h
+++ b/OvmfPkg/AcpiTables/Platform.h
@@ -30,8 +30,8 @@
 #define INT_MODEL       0x01
 #define SCI_INT_VECTOR  0x0009 
 #define SMI_CMD_IO_PORT 0 // If SMM was supported, then this would be 0xB2
-#define ACPI_ENABLE     0x0E1
-#define ACPI_DISABLE    0x01E
+#define ACPI_ENABLE     0
+#define ACPI_DISABLE    0
 #define S4BIOS_REQ      0x00
 #define PM1a_EVT_BLK    0x00000400
 #define PM1b_EVT_BLK    0x00000000