diff --git a/README.md b/README.md
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+# GunGame Mod for Counter-Strike 1.6
+
+## What is this?
+GunGame is one of most dynamic modifications in terms of gameplay. In this it is similar to CSDM mod, which uses a similar game mechanic: <br>
+– purchase menu is not available; <br>
+– money is not given out; <br>
+– weapon cannot be thrown away and it disappears after death of the owner. <br>
+In the GunGame modification, players are respawned with a weapon corresponding to their level and a knife. For killing enemy, player is awarded a new level, and with it a weapon. By default, knife - is last weapon you can get. Winner will be player who is the first to commit murders with a knife (in team mode, team that was this player in wins).
+ 
+## Composition of the modification
+`regg_core` - basis of modification <br>
+`regg_balancer` - plugin allows you to control the balance of teams <br>
+`regg_controller` - control of game modes (single, team, FFA) <br>
+`regg_informer` - displays the current level of player or team, as well as weapons and number of points <br>
+`regg_leader` - displays current leader of game <br>
+`regg_map_cleaner` - clearing maps from unnecessary entities <br>
+`regg_notify` - notification plugin <br>
+`regg_warmup` - warmup mode before starting main mode <br>
+`regg_show_winner` - shows winner at end of game <br>
+`regg_block_send_wpn_anim` - blocks animation of changing weapons
+
+Requirements
+=============
+- [ReHLDS](https://github.com/dreamstalker/rehlds/) 3.8.0.702 or higher
+- [ReGameDLL_CS](https://github.com/s1lentq/ReGameDLL_CS/) 5.19.0.490 or higher
+- Metamod-r (or Metamod-P)
+- [AMX Mod X](https://github.com/alliedmodders/amxmodx/) 1.9.0 or higher
+- [ReAPI](https://github.com/s1lentq/reapi) 5.18.0.205 or higher
+* Tip: Recommend using the latest versions.
+
+Installation
+=============
+
+- Compile `*.sma` files
+- Move compiled files `*.amxx` to `amxmodx/plugins/`
+- Copy `configs/*.*` files to `amxmodx/configs` directory
diff --git a/cstrike/addons/amxmodx/scripting/include/regg.inc b/cstrike/addons/amxmodx/scripting/include/regg.inc
index 2aafa15..3313075 100644
--- a/cstrike/addons/amxmodx/scripting/include/regg.inc
+++ b/cstrike/addons/amxmodx/scripting/include/regg.inc
@@ -4,6 +4,11 @@
 
 #define _regg_included
 
+// for AMXX_VERSION_NUM < 1.10.0
+#if !defined is_user_authorized
+	native is_user_authorized(index);
+#endif
+
 /********************************************************
 *			   NOTE ON SEMANTIC VERSIONING				*
 ********************************************************/