diff --git a/LuaRules/Gadgets/unit_missilewarn.lua b/LuaRules/Gadgets/unit_missilewarn.lua
index be7e77b556..5a8093c140 100644
--- a/LuaRules/Gadgets/unit_missilewarn.lua
+++ b/LuaRules/Gadgets/unit_missilewarn.lua
@@ -33,6 +33,9 @@ function gadget:Initialize()
 end
 
 function gadget:ProjectileCreated(proID, proOwnerID, weaponID)
+	if not proOwnerID or proOwnerID == -1 then
+		return -- tacnuke nanoframe death is technically launching an ownerless, TTL=0 missile
+	end
 	SendToUnsynced(MAGIC_FIRED, proID, proOwnerID, weaponID)
 end