diff --git a/src/util/skeleton-utils.js b/src/util/skeleton-utils.js
index 37e31da6..696de58f 100644
--- a/src/util/skeleton-utils.js
+++ b/src/util/skeleton-utils.js
@@ -2079,7 +2079,7 @@ const createInnerLinesFromSkeleton = (roofId, canvas, skeleton, textMode, isOver
             const line = new QLine([p1.x, p1.y, p2.x, p2.y], {
               parentId: roof.id,
               fontSize: roof.fontSize,
-              stroke: stroke,
+              stroke: 'black',
               strokeWidth: 4,
               name: lineType,
               lineName: lineType,