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-rw-r--r--BaseTools/Source/Python/FMMT/core/FvHandler.py2
1 files changed, 1 insertions, 1 deletions
diff --git a/BaseTools/Source/Python/FMMT/core/FvHandler.py b/BaseTools/Source/Python/FMMT/core/FvHandler.py
index ff3d637623..058b29321f 100644
--- a/BaseTools/Source/Python/FMMT/core/FvHandler.py
+++ b/BaseTools/Source/Python/FMMT/core/FvHandler.py
@@ -442,7 +442,7 @@ class FvHandler:
# Start free space calculating and moving process.
self.ModifyTest(TargetFv.Parent, Needed_Space)
else:
- New_Free_Space = self.TargetFfs.Data.Size - self.NewFfs.Data.Size
+ New_Free_Space = self.TargetFfs.Data.Size + len(self.TargetFfs.Data.PadData) - self.NewFfs.Data.Size - len(self.NewFfs.Data.PadData)
# If TargetFv already have free space, move the new free space into it.
if TargetFv.Data.Free_Space:
TargetFv.Child[-1].Data.Data += b'\xff' * New_Free_Space