diff --git a/src/conf.cpp b/src/conf.cpp
index 8aeb0026..40b28d57 100644
--- a/src/conf.cpp
+++ b/src/conf.cpp
@@ -201,20 +201,6 @@ namespace conf
         ctx.log_dir = basedir + "/log";
     }
 
-    int persist_unl_update(const std::set<std::string> &updated_unl)
-    {
-        contract_config cfg = {};
-        if (read_config(cfg) == -1)
-            return -1;
-
-        cfg.contract.unl = updated_unl;
-
-        if (write_config(cfg) == -1)
-            return -1;
-
-        return 0;
-    }
-
     /**
      * Reads the config file on disk and populates the in-memory 'cfg' struct.
      * @return 0 for successful loading of config. -1 for failure.
diff --git a/src/conf.hpp b/src/conf.hpp
index 322dc909..156aeb99 100644
--- a/src/conf.hpp
+++ b/src/conf.hpp
@@ -183,8 +183,6 @@ namespace conf
 
     void set_contract_dir_paths(std::string exepath, std::string basedir);
 
-    int persist_unl_update(const std::set<std::string> &updated_unl);
-
     //------Internal-use functions for this namespace.
 
     int read_config(contract_config &cfg);
diff --git a/src/unl.cpp b/src/unl.cpp
index 09f7c8e6..d8b92710 100644
--- a/src/unl.cpp
+++ b/src/unl.cpp
@@ -104,8 +104,6 @@ namespace unl
                 list = conf::cfg.contract.unl;
                 update_json_list();
 
-                conf::persist_unl_update(list);
-                
                 // Update the own node's unl status.
                 conf::cfg.node.is_unl = (list.find(conf::cfg.node.public_key) != list.end());
                 is_unl_list_changed = true;