diff --git a/DynamicTablesPkg/Library/Acpi/Arm/AcpiSsdtPcieLibArm/SsdtPcieGenerator.c b/DynamicTablesPkg/Library/Acpi/Arm/AcpiSsdtPcieLibArm/SsdtPcieGenerator.c
index c54ae6f551..9ddaddc198 100644
--- a/DynamicTablesPkg/Library/Acpi/Arm/AcpiSsdtPcieLibArm/SsdtPcieGenerator.c
+++ b/DynamicTablesPkg/Library/Acpi/Arm/AcpiSsdtPcieLibArm/SsdtPcieGenerator.c
@@ -540,7 +540,7 @@ GeneratePciCrs (
 
     switch (AddrMapInfo->SpaceCode) {
       case PCI_SS_IO:
-        Status = AmlCodeGenRdDWordIo (
+        Status = AmlCodeGenRdQWordIo (
                    FALSE,
                    TRUE,
                    TRUE,