diff --git a/libsrc/meshing/meshclass.cpp b/libsrc/meshing/meshclass.cpp
index e7ea88fd..fcf72e08 100644
--- a/libsrc/meshing/meshclass.cpp
+++ b/libsrc/meshing/meshclass.cpp
@@ -595,7 +595,7 @@ namespace netgen
         outfile << cntmat << endl;
         for (i = 1; i <= materials.Size(); i++)
           if (materials.Get(i) && materials.Get(i)->length())
-            outfile << i << " " << materials.Get(i) << endl;
+            outfile << i << " " << *materials.Get(i) << endl;
       }