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-rw-r--r--DuetPkg/IsaAcpiDxe/PcatIsaAcpi.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/DuetPkg/IsaAcpiDxe/PcatIsaAcpi.h b/DuetPkg/IsaAcpiDxe/PcatIsaAcpi.h
index 57e4112923..b087134f54 100644
--- a/DuetPkg/IsaAcpiDxe/PcatIsaAcpi.h
+++ b/DuetPkg/IsaAcpiDxe/PcatIsaAcpi.h
@@ -53,7 +53,7 @@ typedef struct {
EFI_PCI_IO_PROTOCOL *PciIo;
} PCAT_ISA_ACPI_DEV;
-#define PCAT_ISA_ACPI_DEV_FROM_THIS(a) _CR(a, PCAT_ISA_ACPI_DEV, IsaAcpi)
+#define PCAT_ISA_ACPI_DEV_FROM_THIS(a) BASE_CR(a, PCAT_ISA_ACPI_DEV, IsaAcpi)
//
// Global Variables