diff --git a/opm/input/eclipse/Schedule/Network/ExtNetwork.hpp b/opm/input/eclipse/Schedule/Network/ExtNetwork.hpp
index 0486109a1..0a393489f 100644
--- a/opm/input/eclipse/Schedule/Network/ExtNetwork.hpp
+++ b/opm/input/eclipse/Schedule/Network/ExtNetwork.hpp
@@ -46,7 +46,6 @@ public:
     bool has_node(const std::string& name) const;
     void update_node(Node node);
     const Node& node(const std::string& name) const;
-    bool is_disconnected(const std::string& node) const;
     std::vector<std::reference_wrapper<const Node>> roots() const;
     std::vector<Branch> downtree_branches(const std::string& node) const;
     std::vector<const Branch*> branches() const;