diff --git a/Solver/dgDofContainer.h b/Solver/dgDofContainer.h
index 71395eda17fb4a2419b3652f6d30c0be1c7e8d81..c1ce0989748ade9f861ac5d9b6d3161f60972f71 100644
--- a/Solver/dgDofContainer.h
+++ b/Solver/dgDofContainer.h
@@ -6,7 +6,7 @@
 class dgGroupCollection;
 class dgGroupOfElements;
 
-struct dgDofContainer {
+class dgDofContainer {
 private:
   dgDofContainer (const dgDofContainer&);  
   int _totalNbElements;