diff -r 2ad1f0bdc1f3 -r a251d8757e8c share/hedgewars/Data/Missions/Campaign/A_Classic_Fairytale/backstab.lua
--- a/share/hedgewars/Data/Missions/Campaign/A_Classic_Fairytale/backstab.lua	Sun Jun 16 13:48:22 2019 +0200
+++ b/share/hedgewars/Data/Missions/Campaign/A_Classic_Fairytale/backstab.lua	Sun Jun 16 13:55:32 2019 +0200
@@ -788,6 +788,7 @@
 end
 
 function AddWave3DeadAnim()
+  SetSoundMask(sndBoring, true)
   AnimSwitchHog(deployedHog)
   AnimWait(deployedHog, 1)
   AddFunction({func = HideNatives, args = {}})