add an include

diff --git a/include/deal.II/lac/affine_constraints.h b/include/deal.II/lac/affine_constraints.h
index f0b8167cff2fbd0e7f1b98aa8e92e874cdd3452f..79a37a350fe83879e7850570fab2ab31c468eb8a 100644 (file)
--- a/include/deal.II/lac/affine_constraints.h
+++ b/include/deal.II/lac/affine_constraints.h
@@ -23,6 +23,7 @@
 #include <deal.II/base/subscriptor.h>
 #include <deal.II/base/table.h>
 #include <deal.II/base/template_constraints.h>
+#include <deal.II/base/thread_local_storage.h>
 
 #include <deal.II/lac/vector.h>
 #include <deal.II/lac/vector_element_access.h>