diff --git a/src/game_config_manager.cpp b/src/game_config_manager.cpp
index 637bdb9f3aa5..dbe771b5fac9 100644
--- a/src/game_config_manager.cpp
+++ b/src/game_config_manager.cpp
@@ -499,7 +499,8 @@ void game_config_manager::load_addons_cfg()
 				"resource",
 				"multiplayer",
 				"scenario",
-				"campaign"
+				"campaign",
+				"test"
 			};
 
 			// Annotate appropriate addon types with addon_id info.