add missing override in MatrixFree LaplaceOperator

diff --git a/include/deal.II/matrix_free/operators.h b/include/deal.II/matrix_free/operators.h
index f1644500e6459f566ba839a95a2fe8221ff57c0e..c88346f02801caa10c519ef745e78b7cf90f62cd 100644 (file)
--- a/include/deal.II/matrix_free/operators.h
+++ b/include/deal.II/matrix_free/operators.h
@@ -839,7 +839,7 @@ namespace MatrixFreeOperators
      * approximation to be used in preconditioners.
      */
     virtual void
-    compute_diagonal();
+    compute_diagonal() override;
 
     /**
      * Set the heterogeneous scalar coefficient @p scalar_coefficient to be