diff --git a/plugins/lua/zone.lua b/plugins/lua/zone.lua
index d712747e8..faafc1a59 100644
--- a/plugins/lua/zone.lua
+++ b/plugins/lua/zone.lua
@@ -574,7 +574,7 @@ local function get_disposition(unit)
         disposition = DISPOSITION.TRAINED
     elseif dfhack.units.isTamable(unit) then
         disposition = DISPOSITION.WILD_TRAINABLE
-    elseif dfhack.units.isInvader(unit) then
+    elseif dfhack.units.isInvader(unit) or dfhack.units.isOpposedToLife(unit) then
         disposition = DISPOSITION.HOSTILE
     else
         disposition = DISPOSITION.WILD_UNTRAINABLE