diff --git a/prebuild.xml b/prebuild.xml
index 04a2c4732f..34a6a6e161 100644
--- a/prebuild.xml
+++ b/prebuild.xml
@@ -2750,33 +2750,6 @@
       </Files>
     </Project>
 
-    <Project frameworkVersion="v4_0" name="OpenSim.Tests.Clients.InstantantMessage" path="OpenSim/Tests/Clients/InstantMessage" type="Exe">
-      <Configuration name="Debug">
-        <Options>
-          <OutputPath>../../../../bin/</OutputPath>
-        </Options>
-      </Configuration>
-      <Configuration name="Release">
-        <Options>
-          <OutputPath>../../../../bin/</OutputPath>
-        </Options>
-      </Configuration>
-
-      <ReferencePath>../../../../bin/</ReferencePath>
-      <Reference name="System"/>
-      <Reference name="OpenMetaverseTypes" path="../../../../bin/"/>
-      <Reference name="OpenMetaverse" path="../../../../bin/"/>
-      <Reference name="OpenSim.Framework"/>
-      <Reference name="OpenSim.Services.Interfaces"/>
-      <Reference name="OpenSim.Services.Connectors"/>
-      <Reference name="Nini" path="../../../../bin/"/>
-      <Reference name="log4net" path="../../../../bin/"/>
-
-      <Files>
-        <Match pattern="*.cs" recurse="true"/>
-      </Files>
-    </Project>
-
     <!-- Test assemblies -->
     <Project frameworkVersion="v4_0" name="OpenSim.Tests.Common" path="OpenSim/Tests/Common" type="Library">
       <Configuration name="Debug">