diff --git a/binaries/data/mods/public/simulation/templates/template_unit_mechanical_siege_ballista.xml b/binaries/data/mods/public/simulation/templates/template_unit_mechanical_siege_ballista.xml
index f6e33b743f..abea8f0df8 100644
--- a/binaries/data/mods/public/simulation/templates/template_unit_mechanical_siege_ballista.xml
+++ b/binaries/data/mods/public/simulation/templates/template_unit_mechanical_siege_ballista.xml
@@ -41,4 +41,9 @@
   <Vision>
     <Range>80</Range>
   </Vision>
+  <Sound>
+    <SoundGroups>
+      <select>attack/siege/siege_select.xml</select>
+    </SoundGroups>
+  </Sound>
 </Entity>
diff --git a/binaries/data/mods/public/simulation/templates/template_unit_mechanical_siege_onager.xml b/binaries/data/mods/public/simulation/templates/template_unit_mechanical_siege_onager.xml
index 4280802681..acdb148e6e 100644
--- a/binaries/data/mods/public/simulation/templates/template_unit_mechanical_siege_onager.xml
+++ b/binaries/data/mods/public/simulation/templates/template_unit_mechanical_siege_onager.xml
@@ -40,4 +40,9 @@
   <Vision>
     <Range>90</Range>
   </Vision>
+  <Sound>
+    <SoundGroups>
+      <select>attack/siege/siege_select.xml</select>
+    </SoundGroups>
+  </Sound>
 </Entity>