diff --git a/binaries/data/mods/public/simulation/data/technologies/tower_armour.json b/binaries/data/mods/public/simulation/data/technologies/tower_health.json
similarity index 67%
rename from binaries/data/mods/public/simulation/data/technologies/tower_armour.json
rename to binaries/data/mods/public/simulation/data/technologies/tower_health.json
index 73309632c6..b344860469 100644
--- a/binaries/data/mods/public/simulation/data/technologies/tower_armour.json
+++ b/binaries/data/mods/public/simulation/data/technologies/tower_health.json
@@ -6,11 +6,9 @@
 	"requirementsTooltip": "Unlocked in City Phase.",
 	"icon": "architecture.png",
 	"researchTime": 40,
-	"tooltip": "Towers +2 armor.",
+	"tooltip": "Towers +25% health.",
 	"modifications": [
-		{ "value": "Resistance/Entity/Damage/Hack", "add": 2 },
-		{ "value": "Resistance/Entity/Damage/Pierce", "add": 2 },
-		{ "value": "Resistance/Entity/Damage/Crush", "add": 2 }
+		{ "value": "Health/Max", "multiply": 1.25 }
 	],
 	"affects": ["Tower"],
 	"soundComplete": "interface/alarm/alarm_upgradearmory.xml"
diff --git a/binaries/data/mods/public/simulation/templates/template_structure_defensive_tower.xml b/binaries/data/mods/public/simulation/templates/template_structure_defensive_tower.xml
index 85348cf2e7..2d3c93ab15 100644
--- a/binaries/data/mods/public/simulation/templates/template_structure_defensive_tower.xml
+++ b/binaries/data/mods/public/simulation/templates/template_structure_defensive_tower.xml
@@ -53,6 +53,15 @@
     <GenericName>Tower</GenericName>
     <VisibleClasses datatype="tokens">Tower</VisibleClasses>
   </Identity>
+  <ProductionQueue>
+    <Technologies datatype="tokens">
+      tower_watch
+      tower_crenellations
+      tower_range
+      tower_murderholes
+      tower_health
+    </Technologies>
+  </ProductionQueue>
   <Sound>
     <SoundGroups>
       <constructed>interface/complete/building/complete_tower.xml</constructed>
diff --git a/binaries/data/mods/public/simulation/templates/template_structure_defensive_tower_artillery.xml b/binaries/data/mods/public/simulation/templates/template_structure_defensive_tower_artillery.xml
index 1abb6bf312..2d5732e4fd 100644
--- a/binaries/data/mods/public/simulation/templates/template_structure_defensive_tower_artillery.xml
+++ b/binaries/data/mods/public/simulation/templates/template_structure_defensive_tower_artillery.xml
@@ -68,15 +68,6 @@
   <Obstruction>
     <Static width="7.0" depth="7.0"/>
   </Obstruction>
-  <ProductionQueue>
-    <Technologies datatype="tokens">
-      tower_watch
-      tower_crenellations
-      tower_range
-      tower_murderholes
-      tower_armour
-    </Technologies>
-  </ProductionQueue>
   <Sound>
     <SoundGroups>
       <attack_impact_ranged>attack/impact/siegeprojectilehit.xml</attack_impact_ranged>
diff --git a/binaries/data/mods/public/simulation/templates/template_structure_defensive_tower_bolt.xml b/binaries/data/mods/public/simulation/templates/template_structure_defensive_tower_bolt.xml
index 053662caee..6ebda21f26 100644
--- a/binaries/data/mods/public/simulation/templates/template_structure_defensive_tower_bolt.xml
+++ b/binaries/data/mods/public/simulation/templates/template_structure_defensive_tower_bolt.xml
@@ -67,15 +67,6 @@
   <Obstruction>
     <Static width="7.0" depth="7.0"/>
   </Obstruction>
-  <ProductionQueue>
-    <Technologies datatype="tokens">
-      tower_watch
-      tower_crenellations
-      tower_range
-      tower_murderholes
-      tower_armour
-    </Technologies>
-  </ProductionQueue>
   <Sound>
     <SoundGroups>
       <attack_ranged>attack/weapon/arrowfly.xml</attack_ranged>
diff --git a/binaries/data/mods/public/simulation/templates/template_structure_defensive_tower_sentry.xml b/binaries/data/mods/public/simulation/templates/template_structure_defensive_tower_sentry.xml
index 842ce44c23..80c403283b 100644
--- a/binaries/data/mods/public/simulation/templates/template_structure_defensive_tower_sentry.xml
+++ b/binaries/data/mods/public/simulation/templates/template_structure_defensive_tower_sentry.xml
@@ -42,7 +42,10 @@
   </Obstruction>
   <ProductionQueue>
     <Technologies datatype="tokens">
-      tower_watch
+      -tower_crenellations
+      -tower_range
+      -tower_murderholes
+      -tower_health
     </Technologies>
   </ProductionQueue>
   <Resistance>
diff --git a/binaries/data/mods/public/simulation/templates/template_structure_defensive_tower_stone.xml b/binaries/data/mods/public/simulation/templates/template_structure_defensive_tower_stone.xml
index 391c0d17c6..1d1612dda5 100644
--- a/binaries/data/mods/public/simulation/templates/template_structure_defensive_tower_stone.xml
+++ b/binaries/data/mods/public/simulation/templates/template_structure_defensive_tower_stone.xml
@@ -42,15 +42,6 @@
   <Obstruction>
     <Static width="7.0" depth="7.0"/>
   </Obstruction>
-  <ProductionQueue>
-    <Technologies datatype="tokens">
-      tower_watch
-      tower_crenellations
-      tower_range
-      tower_murderholes
-      tower_armour
-    </Technologies>
-  </ProductionQueue>
   <TerritoryInfluence>
     <Root>false</Root>
     <Radius>32</Radius>