diff --git a/demo/src/ellipt.cc b/demo/src/ellipt.cc
index f566b2ccfd814ff2c3e26d0bd71f76ef0ec61c4d..f2c528a2a75091923fde8af730fff17778de0f9c 100644
--- a/demo/src/ellipt.cc
+++ b/demo/src/ellipt.cc
@@ -72,7 +72,7 @@ int main(int argc, char* argv[])
   ellipt.addVectorOperator(rhsOperator, 0);
   
   // ===== add boundary conditions =====
-//  ellipt.addDirichletBC(1, 0, 0, new G);
+  ellipt.addDirichletBC(1, 0, 0, new G);
 
 
   // ===== start adaption loop =====