diff --git a/src/LayerPlan.cpp b/src/LayerPlan.cpp
index 781c1e6eb1..cd692665ee 100644
--- a/src/LayerPlan.cpp
+++ b/src/LayerPlan.cpp
@@ -779,7 +779,7 @@ void LayerPlan::addWallLine(
         // no bridges required
         addExtrusionMove(
             p1,
-            default_config,
+            roofing_config,
             SpaceFillType::Polygons,
             flow,
             width_factor,