diff --git a/FatBinPkg/EnhancedFatDxe/ReadMe.txt b/FatBinPkg/EnhancedFatDxe/ReadMe.txt
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+FAT Binary Package does not provide any debug infrastructure. The PCD value of PcdDebugPropertyMask is set to 0 to disable Assert, Debug Print, Debug Code, Clear Memory, Assert Breakpoint and Assert Dead Loop.
+It also has no patchable-in-module PCD settings. So it only contains UEFI image files.
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