1 files changed, 1 insertions, 1 deletions
diff --git a/OptionRomPkg/AtapiPassThruDxe/AtapiPassThru.h b/OptionRomPkg/AtapiPassThruDxe/AtapiPassThru.h
index 7d3c960e10..5a41a0acf8 100644
--- a/OptionRomPkg/AtapiPassThruDxe/AtapiPassThru.h
+++ b/OptionRomPkg/AtapiPassThruDxe/AtapiPassThru.h
@@ -100,7 +100,7 @@ typedef struct {
   UINT16                          DriveAddress;
 } IDE_BASE_REGISTERS;
 
-#define ATAPI_SCSI_PASS_THRU_DEV_SIGNATURE  EFI_SIGNATURE_32 ('a', 's', 'p', 't')
+#define ATAPI_SCSI_PASS_THRU_DEV_SIGNATURE  SIGNATURE_32 ('a', 's', 'p', 't')
 
 typedef struct {
   UINTN                            Signature;