diff --git a/src/libslic3r/Fill/Fill.cpp b/src/libslic3r/Fill/Fill.cpp
index ddb444f28..499e7b85a 100644
--- a/src/libslic3r/Fill/Fill.cpp
+++ b/src/libslic3r/Fill/Fill.cpp
@@ -646,7 +646,7 @@ Polylines Layer::generate_sparse_infill_polylines_for_anchoring(FillAdaptive::Oc
         // Create the filler object.
         std::unique_ptr<Fill> f = std::unique_ptr<Fill>(Fill::new_from_type(surface_fill.params.pattern));
         f->set_bounding_box(bbox);
-        f->layer_id = this->id();
+        f->layer_id = this->id() - this->object()->get_layer(0)->id(); // We need to subtract raft layers.
         f->z        = this->print_z;
         f->angle    = surface_fill.params.angle;
         f->adapt_fill_octree   = (surface_fill.params.pattern == ipSupportCubic) ? support_fill_octree : adaptive_fill_octree;