diff --git a/src/libslic3r/Format/3mf.cpp b/src/libslic3r/Format/3mf.cpp
index 0c2e20ea42..6356fa17a6 100644
--- a/src/libslic3r/Format/3mf.cpp
+++ b/src/libslic3r/Format/3mf.cpp
@@ -1875,11 +1875,15 @@ namespace Slic3r {
 
             vertices_count += stl.stats.shared_vertices;
 
+#if ENABLE_MODELVOLUME_TRANSFORM
+            Transform3d matrix = volume->get_matrix();
+#endif // ENABLE_MODELVOLUME_TRANSFORM
+
             for (int i = 0; i < stl.stats.shared_vertices; ++i)
             {
                 stream << "     <" << VERTEX_TAG << " ";
 #if ENABLE_MODELVOLUME_TRANSFORM
-                Vec3d v = volume->get_matrix() * stl.v_shared[i].cast<double>();
+                Vec3d v = matrix * stl.v_shared[i].cast<double>();
                 stream << "x=\"" << v(0) << "\" ";
                 stream << "y=\"" << v(1) << "\" ";
                 stream << "z=\"" << v(2) << "\" />\n";