diff --git a/res/core/common/buildings.xml b/res/core/common/buildings.xml
index b73ab01aa..64edc8a34 100644
--- a/res/core/common/buildings.xml
+++ b/res/core/common/buildings.xml
@@ -7,14 +7,14 @@
   <building name="building" namechange="no" maxsize="1" nobuild="yes"/>
 
   <building name="blessedstonecircle" maxcapacity="3" maxsize="100" nobuild="yes" magic="yes" magres="60" magresbonus="30" auraregen="1.50">
-    <construction skill="building" minskill="2" reqsize="100" maxsize="100">
+    <construction skill="building" minskill="2" reqsize="100">
       <requirement type="log" quantity="500"/>
       <requirement type="stone" quantity="500"/>
     </construction>
   </building>
 
   <building name="stonecircle" maxsize="100">
-    <construction skill="building" minskill="2" reqsize="100" maxsize="100">
+    <construction skill="building" minskill="2" reqsize="100">
       <requirement type="log" quantity="500"/>
       <requirement type="stone" quantity="500"/>
     </construction>
@@ -33,7 +33,7 @@
   <building name="tunnel" capacity="1" maxsize="100">
     <maintenance type="stone" amount="2"/>
     <maintenance type="money" amount="100"/>
-    <construction skill="building" minskill="6" reqsize="100" maxsize="100">
+    <construction skill="building" minskill="6" reqsize="100">
       <requirement type="iron" quantity="100"/>
       <requirement type="log" quantity="500"/>
       <requirement type="stone" quantity="1000"/>
@@ -44,7 +44,7 @@
   <building name="caravan" capacity="1" maxsize="10">
     <maintenance type="horse" amount="2"/>
     <maintenance type="money" amount="3000"/>
-    <construction skill="building" minskill="2" reqsize="10" maxsize="10">
+    <construction skill="building" minskill="2" reqsize="10">
       <requirement type="iron" quantity="10"/>
       <requirement type="log" quantity="50"/>
       <requirement type="stone" quantity="10"/>
@@ -55,7 +55,7 @@
   <building name="dam" capacity="1" maxsize="50">
     <maintenance type="log" amount="3"/>
     <maintenance type="money" amount="1000"/>
-    <construction skill="building" minskill="4" reqsize="50" maxsize="50">
+    <construction skill="building" minskill="4" reqsize="50">
       <requirement type="iron" quantity="50"/>
       <requirement type="log" quantity="500"/>
       <requirement type="stone" quantity="250"/>
@@ -107,7 +107,7 @@
 
   <building name="magictower" maxcapacity="2" maxsize="50" magic="yes" magres="40" fumblebonus="10" auraregen="1.75">
     <maintenance type="money" amount="1000"/>
-    <construction skill="building" minskill="5" reqsize="50" maxsize="50">
+    <construction skill="building" minskill="5" reqsize="50">
       <requirement type="log" quantity="150"/>
       <requirement type="stone" quantity="250"/>
       <requirement type="mallorn" quantity="100"/>
@@ -119,7 +119,7 @@
 
   <building name="academy" maxcapacity="25" maxsize="25">
     <maintenance type="money" amount="1000"/>
-    <construction skill="building" minskill="3" reqsize="25" maxsize="25">
+    <construction skill="building" minskill="3" reqsize="25">
       <requirement type="log" quantity="125"/>
       <requirement type="stone" quantity="125"/>
       <requirement type="iron" quantity="25"/>