diff --git a/Resources/Prototypes/GameRules/subgamemodes.yml b/Resources/Prototypes/GameRules/subgamemodes.yml
index ef80a48cef..cb764d9787 100644
--- a/Resources/Prototypes/GameRules/subgamemodes.yml
+++ b/Resources/Prototypes/GameRules/subgamemodes.yml
@@ -20,7 +20,7 @@
     definitions:
     - prefRoles: [ Thief ]
       max: 3
-      playerRatio: 15
+      playerRatio: 20
       lateJoinAdditional: true
       allowNonHumans: true
       multiAntagSetting: NotExclusive