Include ComponentMask in vector_tools_interpolate.h

diff --git a/include/deal.II/numerics/vector_tools_interpolate.h b/include/deal.II/numerics/vector_tools_interpolate.h
index c1bbcfd2584292a5f34f800b7194723d693c1219..a916bdfb739c48f864bc93b437ff719a72e48a10 100644 (file)
--- a/include/deal.II/numerics/vector_tools_interpolate.h
+++ b/include/deal.II/numerics/vector_tools_interpolate.h
@@ -18,13 +18,14 @@
 
 #include <deal.II/base/config.h>
 
+#include <deal.II/fe/component_mask.h>
+
 #include <map>
 
 DEAL_II_NAMESPACE_OPEN
 
 template <typename number>
 class AffineConstraints;
-class ComponentMask;
 template <int dim, int spacedim>
 class DoFHandler;
 template <typename number>