diff --git a/FatPkg/FatPei/FatLiteApi.c b/FatPkg/FatPei/FatLiteApi.c
index 8c7c6e5258..d07422ba93 100644
--- a/FatPkg/FatPei/FatLiteApi.c
+++ b/FatPkg/FatPei/FatLiteApi.c
@@ -591,7 +591,7 @@ LoadRecoveryCapsule (
 
 /**
   Finds the recovery file on a FAT volume.
-  This function finds the the recovery file named FileName on a specified FAT volume and returns
+  This function finds the recovery file named FileName on a specified FAT volume and returns
   its FileHandle pointer.
 
   @param  PrivateData             Global memory map for accessing global
diff --git a/FatPkg/FatPei/FatLitePeim.h b/FatPkg/FatPei/FatLitePeim.h
index 9cacf74ace..0c3c69853c 100644
--- a/FatPkg/FatPei/FatLitePeim.h
+++ b/FatPkg/FatPei/FatLitePeim.h
@@ -185,7 +185,7 @@ typedef struct {
 
 /**
   Finds the recovery file on a FAT volume.
-  This function finds the the recovery file named FileName on a specified FAT volume and returns
+  This function finds the recovery file named FileName on a specified FAT volume and returns
   its FileHandle pointer.
 
   @param  PrivateData             Global memory map for accessing global
diff --git a/FatPkg/FatPei/Mbr.c b/FatPkg/FatPei/Mbr.c
index 5b01604c07..78e73fb811 100644
--- a/FatPkg/FatPei/Mbr.c
+++ b/FatPkg/FatPei/Mbr.c
@@ -51,7 +51,7 @@ PartitionValidMbr (
     EndingLBA   = StartingLBA + UNPACK_UINT32 (Mbr->Partition[Index1].SizeInLBA) - 1;
     if (EndingLBA > LastLba) {
       //
-      // Compatability Errata:
+      // Compatibility Errata:
       //  Some systems try to hide drive space with their INT 13h driver
       //  This does not hide space from the OS driver. This means the MBR
       //  that gets created from DOS is smaller than the MBR created from