diff --git a/prebuild.xml b/prebuild.xml
index 7ee2624..2876c6a 100644
--- a/prebuild.xml
+++ b/prebuild.xml
@@ -31,9 +31,9 @@
       <Reference name="OpenSim.Server.Base" path="../../../bin"/>
       <Reference name="OpenSim.Data" path="../../../bin"/>
 
-      <Reference name="BouncyCastle.Crypto.dll" path="../" localCopy="True"/>
-      <Reference name="MailKit.dll" path="../" localCopy="True"/>
-      <Reference name="MimeKit.dll" path="../" localCopy="True"/>
+      <Reference name="BouncyCastle.Crypto.dll" path="../" localCopy="true"/>
+      <Reference name="MailKit.dll" path="../" localCopy="true"/>
+      <Reference name="MimeKit.dll" path="../" localCopy="true"/>
 	<Files>
 		<Match pattern="*.cs" recurse="true"/>
 	</Files>