diff --git a/src/types/MarkSkill.ts b/src/types/MarkSkill.ts
index 8ab8a5f..8468469 100644
--- a/src/types/MarkSkill.ts
+++ b/src/types/MarkSkill.ts
@@ -1,7 +1,17 @@
+export enum MarkSkillValue {
+    ABSENT = 'abs',
+    EXEMPT = 'disp',
+    NOT_RATED = 'ne',
+    NOT_ACHIEVED = '1',
+    PARTIALLY_ACHIEVED = '2',
+    ACHIEVED = '3',
+    EXCEEEDED = '4'
+}
+
 export interface MarkSkill {
     descriptif: string;
     idElemProg: number;
-    valeur: "2"; // Max 4
+    valeur: MarkSkillValue;
     cdt: boolean;
     idCompetence: number;
     idConnaissance: number;