diff --git a/public/IAdminSystem.h b/public/IAdminSystem.h
index 83e7b646..3c87681e 100644
--- a/public/IAdminSystem.h
+++ b/public/IAdminSystem.h
@@ -307,13 +307,6 @@ namespace SourceMod
 											 OverrideType type,
 											 OverrideRule *pRule) =0;
 
-		/**
-		 * @brief Invalidates and removes a group from the group cache.
-		 *
-		 * @param id			Group id.
-		 */
-		virtual void InvalidateGroup(GroupId id) =0;
-
 		/**
 		 * @brief Tells the admin system to dump a portion of the cache.  
 		 * This calls into plugin forwards to rebuild the cache.