diff --git a/opm/core/WellsManager.hpp b/opm/core/WellsManager.hpp
index 14296b6a..e17eaeb7 100644
--- a/opm/core/WellsManager.hpp
+++ b/opm/core/WellsManager.hpp
@@ -20,8 +20,6 @@
 #ifndef OPM_WELLSMANAGER_HEADER_INCLUDED
 #define OPM_WELLSMANAGER_HEADER_INCLUDED
 
-#include <boost/property_tree/ptree.hpp>
-
 struct Wells;
 struct UnstructuredGrid;