diff --git a/DOCS.md b/DOCS.md
index 8641730..8de58df 100644
--- a/DOCS.md
+++ b/DOCS.md
@@ -33,7 +33,6 @@ On the contrary, to unlock an achievement:
 ### 2.1 Utils
 `achvmt_lib.has_player_achievement(p_name, mod, achvmt_ID)`: check whether a player has unlocked an achievement
 `achvmt_lib.is_player_in_storage(p_name, mod)`: check whether a player has connected after a new mod supporting achievements_lib has been added
-`achvmt_lib.add_player_to_storage(p_name, mod)`: for internal use only
 
 ### 2.2 Getters
 `achvmt_lib.get_achievement(mod, achvmt_ID)`: returns the value assigned to the achievement at the corresponding `achvmt_ID`, if any
diff --git a/api.lua b/api.lua
index f20d0f4..ed27829 100644
--- a/api.lua
+++ b/api.lua
@@ -72,6 +72,7 @@ end
 
 
 
+-- INTERNAL USE ONLY
 function achvmt_lib.add_player_to_storage(p_name)
 
   if not minetest.get_player_by_name(p_name) then