diff --git a/binaries/data/mods/public/art/actors/units/carthaginians/siege_rock.xml b/binaries/data/mods/public/art/actors/units/carthaginians/siege_rock.xml
index 72dd43df85..4b53d29427 100644
--- a/binaries/data/mods/public/art/actors/units/carthaginians/siege_rock.xml
+++ b/binaries/data/mods/public/art/actors/units/carthaginians/siege_rock.xml
@@ -5,6 +5,9 @@
     <variant frequency="100" name="carthaginian ballista">
       <mesh>structural/kart_ballista.dae</mesh>
       <texture>structural/hele_siege.dds</texture>
+	  <props>
+        <prop actor="props/units/weapons/rock_flaming.xml" attachpoint="projectile"/>
+      </props>
     </variant>
   </group>
 </actor>
diff --git a/binaries/data/mods/public/art/meshes/structural/kart_ballista.dae b/binaries/data/mods/public/art/meshes/structural/kart_ballista.dae
index 3ef0f96531..cb875b53bb 100644
--- a/binaries/data/mods/public/art/meshes/structural/kart_ballista.dae
+++ b/binaries/data/mods/public/art/meshes/structural/kart_ballista.dae
@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:0556125f522303e6a8a1d145554d38ff2a5c6faa0f83d6101cd530ff49d012e3
-size 134794
+oid sha256:faf766441866539178d2ba83c7d10a6c65ade635e8d6bb0ef80807c03a50de30
+size 134989
diff --git a/binaries/data/mods/public/simulation/templates/structures/cart_fortress.xml b/binaries/data/mods/public/simulation/templates/structures/cart_fortress.xml
index d8461bf863..10410fded3 100644
--- a/binaries/data/mods/public/simulation/templates/structures/cart_fortress.xml
+++ b/binaries/data/mods/public/simulation/templates/structures/cart_fortress.xml
@@ -18,6 +18,7 @@
       units/cart_hero_hannibal
       units/cart_hero_maharbal
       units/cart_champion_cavalry
+      units/cart_mechanical_siege_ballista
     </Entities>
   </TrainingQueue>
   <VisualActor>