diff --git a/src/client/component/patches.cpp b/src/client/component/patches.cpp
index f5c9bb4..25f445e 100644
--- a/src/client/component/patches.cpp
+++ b/src/client/component/patches.cpp
@@ -331,6 +331,10 @@ namespace patches
 			dvars::override::register_int("igs_s1", 1, 0, 1, 0);
 			dvars::override::register_int("igs_crossgame", 1, 0, 1, 0);
 
+			// Required by UI scripts. Missing when joining a dedi and causes crashes
+			game::Dvar_RegisterInt("scr_gun_winlimit", 1, 0, 10, game::DVAR_FLAG_REPLICATED, "Win limit for Gun Game");
+			game::Dvar_RegisterInt("scr_gun_scorelimit", 18, 1, 1000, game::DVAR_FLAG_REPLICATED, "Score limit for Gun Game");
+
 			// Patch game chat on resolutions higher than 1080p to use the right font
 			utils::hook::call(0x14025C825, get_chat_font_handle);
 			utils::hook::call(0x1402BC42F, get_chat_font_handle);
diff --git a/src/client/game/structs.hpp b/src/client/game/structs.hpp
index 7eba9b1..2d2f9b3 100644
--- a/src/client/game/structs.hpp
+++ b/src/client/game/structs.hpp
@@ -1160,6 +1160,8 @@ namespace game
 		DVAR_FLAG_LATCHED = 0x2,
 		DVAR_FLAG_CHEAT = 0x4,
 		DVAR_FLAG_REPLICATED = 0x8,
+		DVAR_FLAG_INTERNAL = 0x80,
+		DVAR_FLAG_EXTERNAL = 0x100,
 		DVAR_FLAG_SERVERINFO = 0x400,
 		DVAR_FLAG_WRITE = 0x800,
 		DVAR_FLAG_READ = 0x2000,