diff --git a/admin/sync/exercice_files.go b/admin/sync/exercice_files.go
index 1e04d0aa..84cf8c61 100644
--- a/admin/sync/exercice_files.go
+++ b/admin/sync/exercice_files.go
@@ -112,7 +112,14 @@ func CheckExerciceFiles(i Importer, exercice *fic.Exercice, exceptions *CheckExc
 		} else if size, err := getFileSize(i, path.Join(exercice.Path, "files", fname)); err != nil {
 			errs = append(errs, NewFileError(exercice, fname, err))
 		} else {
-			file := exercice.NewDummyFile(path.Join(exercice.Path, "files", fname), getDestinationFilePath(path.Join(exercice.Path, "files", fname)), (*hash512).Sum(nil), size)
+			var digest_shown []byte
+			if strings.HasSuffix(fname, ".gz") {
+				if d, exists := digests[strings.TrimSuffix(fname, ".gz")]; exists {
+					digest_shown = d
+				}
+			}
+
+			file := exercice.NewDummyFile(path.Join(exercice.Path, "files", fname), getDestinationFilePath(path.Join(exercice.Path, "files", fname)), (*hash512).Sum(nil), digest_shown, size)
 
 			// Call checks hooks
 			for _, h := range hooks.fileHooks {
diff --git a/libfic/file.go b/libfic/file.go
index 56cbdea4..5091398c 100644
--- a/libfic/file.go
+++ b/libfic/file.go
@@ -50,7 +50,7 @@ type EFile struct {
 
 // NewDummyFile creates an EFile, without any link to an actual Exercice File.
 // It is used to check the file validity
-func (e *Exercice) NewDummyFile(origin string, dest string, checksum []byte, size int64) *EFile {
+func (e *Exercice) NewDummyFile(origin string, dest string, checksum []byte, checksumShown []byte, size int64) *EFile {
 	return &EFile{
 		Id:            0,
 		origin:        origin,
@@ -58,7 +58,7 @@ func (e *Exercice) NewDummyFile(origin string, dest string, checksum []byte, siz
 		IdExercice:    e.Id,
 		Name:          path.Base(origin),
 		Checksum:      checksum,
-		ChecksumShown: nil,
+		ChecksumShown: checksumShown,
 		Size:          size,
 		Published:     true,
 	}