diff --git a/gamedata/core.games/blacklist.plugins.txt b/gamedata/core.games/blacklist.plugins.txt
index 628b3d61..cf71c529 100644
--- a/gamedata/core.games/blacklist.plugins.txt
+++ b/gamedata/core.games/blacklist.plugins.txt
@@ -18,6 +18,7 @@
 			"plugin_da397f32bf24c7ef954bd121441a3b0e"	"http://forums.alliedmods.net/showpost.php?p=2032419&postcount=1"	/* Advertising plugin being uploaded to CS:GO servers */
 			"plugin_ee0bb0aa0d24491feda4235a92779f71"	"http://forums.alliedmods.net/showpost.php?p=2032419&postcount=1"	/* Advertising plugin being uploaded to CS:GO servers */
 			"plugin_28a4f07bb94e25e160e9655f8a614292"	"https://forums.alliedmods.net/showthread.php?t=291340"	/* [AnoX]A-Nox Core - Version 2.5 */
+			"plugin_dad1e86497adcbeb383da6bd8229069d"	"https://forums.alliedmods.net/showpost.php?p=2511172&postcount=3" /* ZenServer: Ultimate (Zen) - Version 4.50 */
 			"plugin_f405db5491a465b1a30859ee7f7c5080"	""	/* UCP Server (Endi) - Version 6.9 */
 			"plugin_6fcb6721fb740b854b0a05bfc9a7984a"	""	/* UCP Server (Endi) - Version 7.1 */
 			"plugin_4d320d6c5aba5d31c644fe2847c0662f"	""	/* UCP Server (Endi) - Version 7.2 */