diff --git a/mods/ra/rules/infantry.yaml b/mods/ra/rules/infantry.yaml
index efffe41d3d..416c7b2005 100644
--- a/mods/ra/rules/infantry.yaml
+++ b/mods/ra/rules/infantry.yaml
@@ -127,6 +127,7 @@ E2:
 	Explodes:
 		Weapon: UnitExplodeSmall
 		EmptyWeapon: UnitExplodeSmall
+		DamageSource: Killer
 	ProducibleWithLevel:
 		Prerequisites: barracks.upgraded