diff --git a/ivette/src/frama-c/plugins/eva/layout.ts b/ivette/src/frama-c/plugins/eva/layout.ts
index e1a301bc71c74a274a22bfa1adedfbb5e2a268fe..ba3ce772b86cfe20f7b960268c4fa3215e727621 100644
--- a/ivette/src/frama-c/plugins/eva/layout.ts
+++ b/ivette/src/frama-c/plugins/eva/layout.ts
@@ -194,7 +194,7 @@ export class LayoutEngine {
           stackIndex: -1,
           stackCount: stacks.length,
           fct,
-          hlines: 1,
+          hlines,
         });
         stacks.forEach((cs, k) => {
           rs.push({