diff --git a/src/sysrepo_access.hpp b/src/sysrepo_access.hpp
index c2ce909..cebb564 100644
--- a/src/sysrepo_access.hpp
+++ b/src/sysrepo_access.hpp
@@ -42,6 +42,7 @@
     void discardChanges() override;
 
 private:
+    std::vector<std::map<std::string, leaf_data_>> listInstances(const std::string& path) override;
     [[noreturn]] void reportErrors();
 
     std::string fetchSchema(const char* module, const char* revision, const char* submodule);