diff --git a/dat/gui.xml b/dat/gui.xml
index 7861d1c..e6047a1 100644
--- a/dat/gui.xml
+++ b/dat/gui.xml
@@ -17,12 +17,12 @@
 				<x>10</x>
 				<y>201</y>
 			</shield>
-			<armor>
+			<armour>
 				<w>129</w>
 				<h>10</h>
 				<x>10</x>
 				<y>218</y>
-			</armor>
+			</armour>
 			<energy>
 				<w>129</w>
 				<h>10</h>
@@ -72,12 +72,12 @@
 				<x>52</x>
 				<y>201</y>
 			</shield>
-			<armor>
+			<armour>
 				<w>98</w>
 				<h>8</h>
 				<x>52</x>
 				<y>212</y>
-			</armor>
+			</armour>
 			<energy>
 				<w>98</w>
 				<h>8</h>
diff --git a/dat/outfit.xml b/dat/outfit.xml
index 7323505..b368d2e 100644
--- a/dat/outfit.xml
+++ b/dat/outfit.xml
@@ -14,7 +14,7 @@
       <range>300</range>
       <accuracy>30</accuracy>
       <damage>
-        <armor>20</armor>
+        <armour>20</armour>
         <shield>10</shield>
       </damage>
     </specific>
diff --git a/dat/ship.xml b/dat/ship.xml
index 89c490d..7be7fb1 100644
--- a/dat/ship.xml
+++ b/dat/ship.xml
@@ -11,10 +11,10 @@
 		</movement>
 		<health>
 			<shield>70</shield>
-			<armor>80</armor>
+			<armour>80</armour>
 			<energy>240</energy>
 			<shield_regen>80</shield_regen>
-			<armor_regen>50</armor_regen>
+			<armour_regen>50</armour_regen>
 			<energy_regen>40</energy_regen>
 		</health>
 		<characteristics>
@@ -38,10 +38,10 @@
     </movement>
     <health>
       <shield>50</shield>
-      <armor>60</armor>
+      <armour>60</armour>
       <energy>180</energy>
       <shield_regen>100</shield_regen>
-      <armor_regen>60</armor_regen>
+      <armour_regen>60</armour_regen>
       <energy_regen>40</energy_regen>
     </health>
     <characteristics>
@@ -65,10 +65,10 @@
 		</movement>
 		<health>
 			<shield>160</shield>
-			<armor>120</armor>
+			<armour>120</armour>
 			<energy>360</energy>
 			<shield_regen>90</shield_regen>
-			<armor_regen>60</armor_regen>
+			<armour_regen>60</armour_regen>
 			<energy_regen>50</energy_regen>
 		</health>
 		<characteristics>
diff --git a/scripts/ai/basic.lua b/scripts/ai/basic.lua
index 0f96661..263eddc 100644
--- a/scripts/ai/basic.lua
+++ b/scripts/ai/basic.lua
@@ -37,7 +37,7 @@ function attack()
   local dir = face(target)
   local dist = getdist(getpos(target))
 
-  if parmor() < 70 then
+  if parmour() < 70 then
     poptask()
     pushtask(0, "runaway", target)
   elseif dir < 10 and dist > 300 then
diff --git a/scripts/ai/pirate.lua b/scripts/ai/pirate.lua
index 99299cd..441cf0c 100644
--- a/scripts/ai/pirate.lua
+++ b/scripts/ai/pirate.lua
@@ -7,7 +7,7 @@ function control()
 
   -- Running pilot has healed up some.
   if task == "runaway" then
-    if parmor() == 100 then
+    if parmour() == 100 then
       -- "attack" should be called after "runaway".
       poptask()
     end
@@ -16,7 +16,7 @@ function control()
   elseif task ~= "attack" and task ~= "runaway" then
     -- If getenemy() is 0, there is no enemy around.
     enemy = getenemy()
-    if parmor() == 100 and enemy ~= 0 then
+    if parmour() == 100 and enemy ~= 0 then
       -- Taunts.
       num = rng(0,4)
       if num == 0 then msg "Prepare to be boarded!"
@@ -92,7 +92,7 @@ function attack()
   dist = getdist(getpos(target))
 
   -- We need to know when to run away.
-  if parmor() < 70 then
+  if parmour() < 70 then
     pushtask(0, "runaway", target)
   -- Try to obliterate the target.
   elseif dir < 10 and dist > 300 then
diff --git a/scripts/ai/test.lua b/scripts/ai/test.lua
index dd6f971..dac40b3 100644
--- a/scripts/ai/test.lua
+++ b/scripts/ai/test.lua
@@ -52,7 +52,7 @@ function attack()
   dir = face(target)
   dist = getdist(getpos(target))
 
-  if parmor() < 70 then
+  if parmour() < 70 then
     poptask()
     pushtask(0, "runaway", target)
   elseif dir < 10 and dist > 300 then
diff --git a/src/pilot.c b/src/pilot.c
index bee6f44..fc48b95 100644
--- a/src/pilot.c
+++ b/src/pilot.c
@@ -157,7 +157,7 @@ void pilot_render(Pilot* p) {
 
 // Update the pilot.
 static void pilot_update(Pilot* pilot, const double dt) {
-  if(pilot != player && pilot->armour < PILOT_DISABLED_ARMOR * pilot->armour_max) { 
+  if(pilot != player && pilot->armour < PILOT_DISABLED_ARMOUR * pilot->armour_max) { 
     // We are disabled.
     pilot_setFlag(pilot, PILOT_DISABLED);
     // Come to a halt slowly.
diff --git a/src/pilot.h b/src/pilot.h
index 007b9a8..10c6c8e 100644
--- a/src/pilot.h
+++ b/src/pilot.h
@@ -9,8 +9,8 @@
 #define PLAYER_ID 1
 
 // Aproximation for pilot size.
-#define PILOT_SIZE_APROX     0.8
-#define PILOT_DISABLED_ARMOR 0.2 // Based on armour percentage.
+#define PILOT_SIZE_APROX      0.8
+#define PILOT_DISABLED_ARMOUR 0.2 // Based on armour percentage.
 
 // Flags.
 #define pilot_isFlag(p,f)   (p->flags & f)