diff --git a/artifacts/scripting/sfall function notes.md b/artifacts/scripting/sfall function notes.md
index 97d344d7..56e9e790 100644
--- a/artifacts/scripting/sfall function notes.md	
+++ b/artifacts/scripting/sfall function notes.md	
@@ -120,7 +120,7 @@ FUNCTION REFERENCE
 #### `void inc_npc_level(int pid/string name)`
 - Takes a party member PID or an NPC name (deprecated, for compatibility with sfall 4.1.5/3.8.15 or earlier) as an argument. The NPC must be in your party.
 - This function ignores the player's minimum level and the required number of level-ups between NPC level gains. It also ignores the random element, regardless of sfall's **NPCAutoLevel** or **PartyMemberNonRandomLevelUp** setting.
-- Starting from sfall 4.4.10/3.8.50, the maximum possible NPC level is 10.
+- Starting from sfall 4.5/3.8.50, the maximum possible NPC level is 10.
 
 -----
 #### `int get_npc_level(int pid/string name)`
@@ -823,7 +823,7 @@ sfall_funcX metarule functions
 - Items with unique IDs will not stack with other items of the same type in the inventory
 - To just get the current ID number of an object, use `sfall_func2("get_object_data", object, OBJ_DATA_ID)`
 - Unique ID numbers are saved in your savegame, and have a range from `0x10000000` to `0x7FFFFFFF`
-- There is also a unique ID number range for the player and party members from 18000 to 83535
+- There is also a unique ID number range for the player and party members from 18000 to 16795215
 - To assign a new ID number generated by the engine to the object (i.e. unassign a unique ID), call the function with two arguments and pass -1 for the flag argument
 
 ----
@@ -848,7 +848,7 @@ sfall_funcX metarule functions
 - Loads a custom message file and returns the file ID number assigned to it, in the range of `0x3000` to `0x3FFF`, for use with the `message_str_game` function
 - `fileName`: the name of the custom message file (including the **.msg** extension) in the `text\<language>\game\` directory
 - __NOTE:__ if the msg file does not exist in the current language directory, the function will try to load it from the `text\English\game\` directory
-- __Deprecation notice:__ Starting from sfall 4.4.10/3.8.50, the two-argument form is deprecated. The `fileNumber` argument is ignored, and the function behaves the same as the one-argument form.
+- __Deprecation notice:__ Starting from sfall 4.5/3.8.50, the two-argument form is deprecated. The `fileNumber` argument is ignored, and the function behaves the same as the one-argument form.
 
 ----
 #### unwield_slot
diff --git a/sfall/Modules/Objects.cpp b/sfall/Modules/Objects.cpp
index 82c04332..0d758c65 100644
--- a/sfall/Modules/Objects.cpp
+++ b/sfall/Modules/Objects.cpp
@@ -31,7 +31,7 @@ static int maxCountLoadProto = 512;
 long Objects::uniqueID = UniqueID::Start; // current counter id, saving to sfallgv.sav
 
 bool Objects::IsUniqueID(long id) {
-	return (id > UniqueID::Start || (id >= fo::PLAYER_ID && id < 83536)); // 65535 maximum possible number of prototypes
+	return (id > UniqueID::Start || (id >= fo::PLAYER_ID && id < 16795216)); // party member ID = (pid & 0xFFFFFF) + PLAYER_ID
 }
 
 void Objects::SetScriptObjectID(fo::GameObject* obj) {
@@ -97,11 +97,11 @@ identical:
 
 static __declspec(naked) void new_obj_id_hook() {
 	__asm {
-		mov  eax, 83535;
+		mov  eax, 16795215;
 		cmp  ds:[FO_VAR_cur_id], eax;
 		jle  pickNewID;
 		retn;
-pickNewID: // skip PM range (18000 - 83535)
+pickNewID: // skip PM range (18000 - 16795215)
 		mov  ds:[FO_VAR_cur_id], eax;
 		jmp  fo::funcoffs::new_obj_id_;
 	}