diff --git a/module/system/dialogs/learningDialog.mjs b/module/system/dialogs/learningDialog.mjs
index 0acb372..9f641bc 100644
--- a/module/system/dialogs/learningDialog.mjs
+++ b/module/system/dialogs/learningDialog.mjs
@@ -182,7 +182,9 @@ export default class LearningDialog extends HandlebarsApplicationMixin(foundry.a
   }
 
   #getSpecialtyName() {
-    return this.#el.querySelector("#specialty-name")?.value?.trim() || game.i18n.localize("ITEMS.new_specialty");
+    // Le dialogue peut avoir été fermé pendant le jet (this.#el null).
+    const el = this.#el?.querySelector("#specialty-name");
+    return el?.value?.trim() || game.i18n.localize("ITEMS.new_specialty");
   }
 
   #compute() {