diff --git a/OvmfPkg/AcpiTables/Dsdt.asl b/OvmfPkg/AcpiTables/Dsdt.asl
index ac0fec49e8..a0c762291e 100644
--- a/OvmfPkg/AcpiTables/Dsdt.asl
+++ b/OvmfPkg/AcpiTables/Dsdt.asl
@@ -368,6 +368,7 @@ DefinitionBlock ("Dsdt.aml", "DSDT", 1, "INTEL ", "OVMF    ", 3) {
             IO (Decode16, 0x440, 0x440, 0x00, 0x10)
             IO (Decode16, 0x678, 0x678, 0x00, 0x08)
             IO (Decode16, 0x778, 0x778, 0x00, 0x08)
+            IO (Decode16, 0xafe0, 0xafe0, 0x00, 0x04)     // QEMU GPE0 BLK
             Memory32Fixed (ReadOnly, 0xFEC00000, 0x1000)  // IO APIC
             Memory32Fixed (ReadOnly, 0xFEE00000, 0x1000)
           })
diff --git a/OvmfPkg/AcpiTables/Platform.h b/OvmfPkg/AcpiTables/Platform.h
index 4e56947270..c9aa547067 100644
--- a/OvmfPkg/AcpiTables/Platform.h
+++ b/OvmfPkg/AcpiTables/Platform.h
@@ -39,7 +39,7 @@
 #define PM1b_CNT_BLK    0x00000000
 #define PM2_CNT_BLK     0x00000022
 #define PM_TMR_BLK      0x00000408
-#define GPE0_BLK        0x0000040C
+#define GPE0_BLK        0x0000afe0
 #define GPE1_BLK        0x00000000
 #define PM1_EVT_LEN     0x04
 #define PM1_CNT_LEN     0x02