diff --git a/src/libslic3r/SLAPrint.cpp b/src/libslic3r/SLAPrint.cpp
index 6d98321699..0da8e62390 100644
--- a/src/libslic3r/SLAPrint.cpp
+++ b/src/libslic3r/SLAPrint.cpp
@@ -451,6 +451,7 @@ const TriangleMesh &SLAPrintObject::transformed_mesh() const {
     m_transformed_rmesh = m_model_object->raw_mesh();
     m_transformed_rmesh.transform(m_trafo);
     m_trmesh_valid = true;
+    return m_transformed_rmesh;
 }
 
 } // namespace Slic3r