diff --git a/prebuild.xml b/prebuild.xml
index 411ceb051d..b56c5b506e 100644
--- a/prebuild.xml
+++ b/prebuild.xml
@@ -3146,6 +3146,7 @@
       <Reference name="OpenSim.Region.OptionalModules"/>
       <Reference name="OpenSim.Region.ScriptEngine.Shared"/>
       <Reference name="OpenSim.Region.ScriptEngine.Shared.Api"/>
+      <Reference name="OpenSim.Region.ScriptEngine.Shared.Api.Runtime"/>
       <Reference name="OpenSim.Region.ScriptEngine.XEngine"/>
       <Reference name="OpenSim.Services.Interfaces"/>
       <Reference name="OpenSim.Tests.Common"/>