diff --git a/Resources/Prototypes/GameRules/events.yml b/Resources/Prototypes/GameRules/events.yml
index b2f6f947cc..7281063c49 100644
--- a/Resources/Prototypes/GameRules/events.yml
+++ b/Resources/Prototypes/GameRules/events.yml
@@ -157,6 +157,7 @@
     duration: 240
   - type: KudzuGrowthRule
 
+# Added MobMouse to specialEntries list to reduce RatKing spawn
 - type: entity
   id: MouseMigration
   parent: BaseGameRule
@@ -183,6 +184,8 @@
     specialEntries:
     - id: SpawnPointGhostRatKing
       prob: 0.001
+    - id: MobMouse # WD
+      prob: 0.02
 
 - type: entity
   id: CockroachMigration