diff --git a/src/app/formulaire/definition/form-compute-courbe-remous.ts b/src/app/formulaire/definition/form-compute-courbe-remous.ts
index b69986e83c954b0795184a17145b424b6c3e7958..bd96cd99ed4682ed0bb27293054396817f290be6 100644
--- a/src/app/formulaire/definition/form-compute-courbe-remous.ts
+++ b/src/app/formulaire/definition/form-compute-courbe-remous.ts
@@ -24,7 +24,7 @@ export class FormComputeCourbeRemous extends FormCompute {
     protected compute() {
         const cr: CourbeRemous = this._formBase.currentNub as CourbeRemous;
         const prmCR: CourbeRemousParams = cr.prms as CourbeRemousParams;
-        const sect: acSection = prmCR.Sn;
+        const sect: acSection = cr.Sn;
 
         this.resultYn = sect.Calc("Yn"); // hauteur normale
         this.resultYc = sect.Calc("Yc"); // hauteur critique