diff --git a/DynamicTablesPkg/Library/Acpi/Arm/AcpiSsdtPcieLibArm/SsdtPcieGenerator.c b/DynamicTablesPkg/Library/Acpi/Arm/AcpiSsdtPcieLibArm/SsdtPcieGenerator.c
index a34018151f..626e53d702 100644
--- a/DynamicTablesPkg/Library/Acpi/Arm/AcpiSsdtPcieLibArm/SsdtPcieGenerator.c
+++ b/DynamicTablesPkg/Library/Acpi/Arm/AcpiSsdtPcieLibArm/SsdtPcieGenerator.c
@@ -449,7 +449,7 @@ GeneratePrt (
     if ((Index > 0)   &&
         (IrqMapInfo->IntcInterrupt.Interrupt >= 32)   &&
         (IrqMapInfo->IntcInterrupt.Interrupt < 1020)  &&
-        ((IrqMapInfo->IntcInterrupt.Flags & 0x3) != BIT0))
+        ((IrqMapInfo->IntcInterrupt.Flags & 0xB) != 0))
     {
       Status = EFI_INVALID_PARAMETER;
       ASSERT_EFI_ERROR (Status);
diff --git a/DynamicTablesPkg/Library/FdtHwInfoParserLib/FdtUtility.h b/DynamicTablesPkg/Library/FdtHwInfoParserLib/FdtUtility.h
index f2f425632b..3f5d131d9a 100644
--- a/DynamicTablesPkg/Library/FdtHwInfoParserLib/FdtUtility.h
+++ b/DynamicTablesPkg/Library/FdtHwInfoParserLib/FdtUtility.h
@@ -60,7 +60,7 @@
 #define SPI_OFFSET  (32U)
 #define DT_PPI_IRQ  (1U)
 #define DT_SPI_IRQ  (0U)
-#define DT_IRQ_IS_EDGE_TRIGGERED(x)  ((((x) & (BIT0 | BIT2)) != 0))
+#define DT_IRQ_IS_EDGE_TRIGGERED(x)  ((((x) & (BIT0 | BIT1)) != 0))
 #define DT_IRQ_IS_ACTIVE_LOW(x)      ((((x) & (BIT1 | BIT3)) != 0))
 #define IRQ_TYPE_OFFSET    (0U)
 #define IRQ_NUMBER_OFFSET  (1U)