1 files changed, 1 insertions, 0 deletions
diff --git a/ttd.c b/ttd.c
index 789a68b41..cd7faef4b 100644
--- a/ttd.c
+++ b/ttd.c
@@ -468,6 +468,7 @@ void SetDebugString(const char *s)
 		else if IS_LVL("ai") p = &_debug_ai_level;
 		else if IS_LVL("net") p = &_debug_net_level;
 		else if IS_LVL("map") p = &_debug_map_level;
+		else if IS_LVL("ms") p = &_debug_ms_level;
 		else {
 			ShowInfoF("Unknown debug level '%.*s'", s-t, t);
 			return;