add missing override

diff --git a/include/deal.II/matrix_free/operators.h b/include/deal.II/matrix_free/operators.h
index c88346f02801caa10c519ef745e78b7cf90f62cd..5dcd2231afd4c16182272d93641c7d49cd6d39fb 100644 (file)
--- a/include/deal.II/matrix_free/operators.h
+++ b/include/deal.II/matrix_free/operators.h
@@ -900,7 +900,7 @@ namespace MatrixFreeOperators
      * constructed object.
      */
     virtual void
-    clear();
+    clear() override;
 
     /**
      * Read/Write access to coefficients to be used in Laplace operator.