diff --git a/Sofa/Component/Topology/Container/Grid/src/sofa/component/topology/container/grid/SparseGridTopology.cpp b/Sofa/Component/Topology/Container/Grid/src/sofa/component/topology/container/grid/SparseGridTopology.cpp
index 071f39c0cd6..3ad22bb854a 100644
--- a/Sofa/Component/Topology/Container/Grid/src/sofa/component/topology/container/grid/SparseGridTopology.cpp
+++ b/Sofa/Component/Topology/Container/Grid/src/sofa/component/topology/container/grid/SparseGridTopology.cpp
@@ -885,7 +885,7 @@ void SparseGridTopology::launchPropagationFromSeed(const type::Vec3i &point,
     seed.push(point);
     while (!seed.empty())
     {
-        const type::Vec3i &s=seed.top();
+        const type::Vec3i s=seed.top();
         seed.pop();
         propagateFrom(s,regularGrid,regularGridTypes,alreadyTested,seed);
     }