diff --git a/app/static/js/releve-but.js b/app/static/js/releve-but.js
index 1550f88970..526514589f 100644
--- a/app/static/js/releve-but.js
+++ b/app/static/js/releve-but.js
@@ -227,7 +227,7 @@ class releveBUT extends HTMLElement {
 		if (data.semestre.decision?.code) {
 			this.shadow.querySelector(".decision").innerHTML = "Décision jury: " + (data.semestre.decision?.code || "");
 		}
-		this.shadow.querySelector("#ects_tot").innerHTML = "ECTS : " + (data.semestre.ECTS?.acquis || "-") + " / " + (data.semestre.ECTS?.total || "-");
+		this.shadow.querySelector("#ects_tot").innerHTML = "ECTS : " + (data.semestre.ECTS?.acquis ?? "-") + " / " + (data.semestre.ECTS?.total ?? "-");
 	}
 
 	/*******************************/
@@ -254,13 +254,13 @@ class releveBUT extends HTMLElement {
 								${ue}${(dataUE.titre) ? " - " + dataUE.titre : ""}
 							</h3>
 							<div>
-								<div class=moyenne>Moyenne&nbsp;:&nbsp;${dataUE.moyenne?.value || "-"}</div>
+								<div class=moyenne>Moyenne&nbsp;:&nbsp;${dataUE.moyenne?.value ?? "-"}</div>
 								<div class=rang>Rang&nbsp;:&nbsp;${dataUE.moyenne?.rang}&nbsp;/&nbsp;${dataUE.moyenne?.total}</div>
 								<div class=info>
 									Bonus&nbsp;:&nbsp;${dataUE.bonus || 0}&nbsp;- 
 									Malus&nbsp;:&nbsp;${dataUE.malus || 0}
 									<span class=ects>&nbsp;-
-										ECTS&nbsp;:&nbsp;${dataUE.ECTS?.acquis || "-"}&nbsp;/&nbsp;${dataUE.ECTS?.total || "-"}
+										ECTS&nbsp;:&nbsp;${dataUE.ECTS?.acquis ?? "-"}&nbsp;/&nbsp;${dataUE.ECTS?.total ?? "-"}
 									</span>
 								</div>
 							</div>`;