diff --git a/code/game/gamemodes/colonialmarines/colonialmarines.dm b/code/game/gamemodes/colonialmarines/colonialmarines.dm
index ca0f34e64a7b..a66403fc00f5 100644
--- a/code/game/gamemodes/colonialmarines/colonialmarines.dm
+++ b/code/game/gamemodes/colonialmarines/colonialmarines.dm
@@ -332,7 +332,7 @@
 			if(HS.living_xeno_queen && !should_block_game_interaction(HS.living_xeno_queen.loc))
 				//Some Queen is alive, we shouldn't end the game yet
 				return
-		if (HS.totalXenos <= 3)
+		if(length(HS.totalXenos) <= 3)
 			round_finished = MODE_INFESTATION_M_MAJOR
 		else
 			round_finished = MODE_INFESTATION_M_MINOR