diff --git a/admin/sync/exercice_hints.go b/admin/sync/exercice_hints.go
index 9eb8c871..d485e7fb 100644
--- a/admin/sync/exercice_hints.go
+++ b/admin/sync/exercice_hints.go
@@ -127,7 +127,9 @@ func SyncExerciceHints(i Importer, exercice fic.Exercice, flagsBindings map[int6
 				// Handle hints dependencies on flags
 				for _, nf := range hint.FlagsDeps {
 					if f, ok := flagsBindings[nf]; ok {
-						h.AddDepend(f)
+						if herr := h.AddDepend(f); herr != nil {
+							errs = append(errs, fmt.Sprintf("%q: error hint #%d dependency to flag #%d: %s", path.Base(exercice.Path), hint.Line, nf, herr))
+						}
 					} else {
 						errs = append(errs, fmt.Sprintf("%q: error hint #%d dependency to flag #%d: Unexistant flag", path.Base(exercice.Path), hint.Line, nf))
 					}