diff --git a/source/engine/mecanismViews/Barème.tsx b/source/engine/mecanismViews/Barème.tsx
index 73b78630c..c97316422 100644
--- a/source/engine/mecanismViews/Barème.tsx
+++ b/source/engine/mecanismViews/Barème.tsx
@@ -90,9 +90,7 @@ export const TrancheTable = ({ tranches, multiplicateur }) => {
 }
 
 const Tranche = ({ tranche, multiplicateur }) => {
-	const isHighlighted =
-		tranche.isActive || (tranche.nodeValue != null && tranche.nodeValue)
-
+	const isHighlighted = tranche.isActive
 	return (
 		<tr className={classNames('tranche', { activated: isHighlighted })}>
 			<td key="tranche">
diff --git a/source/engine/mecanisms/grille.ts b/source/engine/mecanisms/grille.ts
index e62f77546..1fd819fdd 100644
--- a/source/engine/mecanisms/grille.ts
+++ b/source/engine/mecanisms/grille.ts
@@ -73,9 +73,11 @@ const evaluate = (
 
 	return {
 		...node,
-		tranches,
-		assiette,
-		multiplicateur,
+		explanation: {
+			tranches,
+			assiette,
+			multiplicateur
+		},
 		missingVariables,
 		nodeValue,
 		unit: activeTranches[0]?.unit ?? node.unit