diff --git a/Applications/FileIO/FEFLOW/FEFLOWMeshInterface.cpp b/Applications/FileIO/FEFLOW/FEFLOWMeshInterface.cpp
index 9f31d9ced2455e5358a65242a1520d6cb635c25b..8f67c6df774e2195ce6c8d6ea2f2f19f33df69f2 100644
--- a/Applications/FileIO/FEFLOW/FEFLOWMeshInterface.cpp
+++ b/Applications/FileIO/FEFLOW/FEFLOWMeshInterface.cpp
@@ -454,7 +454,7 @@ MeshLib::Element* FEFLOWMeshInterface::readElement(
     ss >> ele_type;
 
     MeshLib::MeshElemType elem_type;
-    int n_nodes_of_element;
+    std::size_t n_nodes_of_element;
     switch (ele_type)
     {
         case 6: