diff --git a/libfic/exercice.go b/libfic/exercice.go
index ed6f2efb..112d4973 100644
--- a/libfic/exercice.go
+++ b/libfic/exercice.go
@@ -107,6 +107,14 @@ func (e Exercice) Update() (int64, error) {
 	}
 }
 
+func (e Exercice) GetTheme() (Theme, error) {
+	var tid int
+	if err := DBQueryRow("SELECT id_theme FROM exercices WHERE id_exercice=?", e.Id).Scan(&tid); err != nil {
+		return Theme{}, err
+	}
+	return GetTheme(tid)
+}
+
 func (e Exercice) Delete() (int64, error) {
 	if res, err := DBExec("DELETE FROM exercices WHERE id_exercice = ?", e.Id); err != nil {
 		return 0, err