diff --git a/LayoutFunctions/LayoutFunctionCommon/LayoutStrategies.cs b/LayoutFunctions/LayoutFunctionCommon/LayoutStrategies.cs
index 40049b75..537684fa 100644
--- a/LayoutFunctions/LayoutFunctionCommon/LayoutStrategies.cs
+++ b/LayoutFunctions/LayoutFunctionCommon/LayoutStrategies.cs
@@ -259,7 +259,7 @@ public static SpaceConfiguration LimitConfigsToId<TSpaceBoundary>(SpaceConfigura
                 for (int i = wallCandidateOptions.Count - 1; i >= 0; i--)
                 {
                     var (OrientationGuideEdge, _) = wallCandidateOptions[i];
-                    if (OrientationGuideEdge.Line.Mid().DistanceTo(roomOrientationEdge.Mid()) > 0.01)
+                    if (OrientationGuideEdge.Line.Mid().Project(Plane.XY).DistanceTo(roomOrientationEdge.Mid().Project(Plane.XY)) > 0.01)
                     {
                         wallCandidateOptions.RemoveAt(i);
                     }