diff --git a/binaries/data/mods/official/entities/units/hele_mechanical_siege_ballista.xml b/binaries/data/mods/official/entities/units/hele_mechanical_siege_ballista.xml
index 43ae950d78..04c449aa19 100644
--- a/binaries/data/mods/official/entities/units/hele_mechanical_siege_ballista.xml
+++ b/binaries/data/mods/official/entities/units/hele_mechanical_siege_ballista.xml
@@ -21,6 +21,11 @@
 		<Health>
 			<Max>200</Max>
 		</Health>
+ 		<Footprint>
+ 			<Width>2.0</Width>
+ 			<Depth>4.0</Depth>
+ 			<Height>2.0</Height>
+		</Footprint>		
 	</Traits>
 	<Actions>
  		<Move>
@@ -30,5 +35,5 @@
 			</Run>
 		</Move>
 	</Actions>
-	<Actor>units/hellenes/mechanical_siege_ballista.xml</Actor>
+	<Actor>units/hellenes/siege_spear.xml</Actor>
 </Entity>
\ No newline at end of file
diff --git a/binaries/data/mods/official/entities/units/hele_mechanical_siege_onager.xml b/binaries/data/mods/official/entities/units/hele_mechanical_siege_onager.xml
index b4afeade3b..e9785c3f8d 100644
--- a/binaries/data/mods/official/entities/units/hele_mechanical_siege_onager.xml
+++ b/binaries/data/mods/official/entities/units/hele_mechanical_siege_onager.xml
@@ -1,6 +1,9 @@
 <?xml version="1.0" encoding="iso-8859-1" standalone="no"?>
 
 <Entity	Parent="template_unit_mechanical_siege_onager">
+
+	<Actor>units/hellenes/siege_rock.xml</Actor>
+
 	<Traits>
 	
 		<Id>
@@ -21,6 +24,11 @@
 		<Health>
 			<Max>300</Max>
 		</Health>
+ 		<Footprint>
+ 			<Width>3.5</Width>
+ 			<Depth>8.0</Depth>
+ 			<Height>3.5</Height>
+		</Footprint>		
 	</Traits>
-	<Actor>units/hellenes/mechanical_siege_onager.xml</Actor>
+
 </Entity>
\ No newline at end of file
diff --git a/binaries/data/mods/official/maps/scenarios/Playtest - Desert Oasis.xml b/binaries/data/mods/official/maps/scenarios/Playtest - Desert Oasis.xml
index ebf96dbf5a..7aba0c8d19 100644
--- a/binaries/data/mods/official/maps/scenarios/Playtest - Desert Oasis.xml	
+++ b/binaries/data/mods/official/maps/scenarios/Playtest - Desert Oasis.xml	
@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:e764576c82e0858d7ef6a14f71daaf0ab4c0147c7dbebc0df0f40514915d7cc0
-size 360930
+oid sha256:2b7b15d5477ab77e49b86ed14049f410f4bdbf46c2fdff0db9be646c81033633
+size 360935