diff --git a/protocol/files/filesharing_subsystem.go b/protocol/files/filesharing_subsystem.go
index b2f6241..4bac6be 100644
--- a/protocol/files/filesharing_subsystem.go
+++ b/protocol/files/filesharing_subsystem.go
@@ -82,7 +82,7 @@ func (fsss *FileSharingSubSystem) RequestManifestParts(fileKey string) []model.P
 		chunkID := 0;
 		for i := 0; i < len(serializedManifest); i += DefaultChunkSize {
 			offset := i
-			end := (i + 1) + DefaultChunkSize
+			end := i + DefaultChunkSize
 			// truncate end
 			if end > len(serializedManifest) {
 				end = len(serializedManifest)