diff --git a/prebuild.xml b/prebuild.xml
index 18f5dfb42e..05b36d0d50 100644
--- a/prebuild.xml
+++ b/prebuild.xml
@@ -1703,7 +1703,7 @@
       <Reference name="OpenSim.Capabilities"/>
       <Reference name="OpenSim.Capabilities.Handlers"/>
       <Reference name="OpenSim.Framework"/>
-	  <Reference name="OpenSim.Framework.Monitoring"/>
+      <Reference name="OpenSim.Framework.Monitoring"/>
       <Reference name="OpenSim.Framework.Servers"/>
       <Reference name="OpenSim.Framework.Servers.HttpServer"/>
       <Reference name="OpenSim.Framework.Console"/>
@@ -1713,7 +1713,7 @@
       <Reference name="Nini" path="../../../../../bin/"/>
       <Reference name="log4net" path="../../../../../bin/"/>
       <Reference name="Nini" path="../../../../../bin/"/>
-	  <Reference name="zlib.net" path="../../../../bin/"/>
+      <Reference name="zlib.net" path="../../../../../bin/"/>
 
       <Files>
         <Match pattern="*.cs" recurse="true">