diff --git a/src/validation.h b/src/validation.h
index dcd4ddfa89..8112e38704 100644
--- a/src/validation.h
+++ b/src/validation.h
@@ -873,6 +873,7 @@ public:
     void Reset();
 };
 
+/** DEPRECATED! Please use node.chainman instead. May only be used in validation.cpp internally */
 extern ChainstateManager g_chainman GUARDED_BY(::cs_main);
 
 /** @returns the most-work valid chainstate. */