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-rw-r--r--EdkCompatibilityPkg/Foundation/Efi/Include/EfiTypes.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/EdkCompatibilityPkg/Foundation/Efi/Include/EfiTypes.h b/EdkCompatibilityPkg/Foundation/Efi/Include/EfiTypes.h
index 25a6e02ee9..7d8b43f9f9 100644
--- a/EdkCompatibilityPkg/Foundation/Efi/Include/EfiTypes.h
+++ b/EdkCompatibilityPkg/Foundation/Efi/Include/EfiTypes.h
@@ -53,7 +53,10 @@ typedef UINT64 EFI_LBA;
#define OUT
#define OPTIONAL
#endif
+
+#ifndef UNALIGNED
#define UNALIGNED
+#endif
//
// Modifiers for EFI Runtime and Boot Services