diff --git a/openbis/build/build.xml b/openbis/build/build.xml
index fb0d014f6b7b893e2cd39e08871239c95ec80b40..f049f9a2b18813366a8eab47e6faa2ae5e0360d7 100644
--- a/openbis/build/build.xml
+++ b/openbis/build/build.xml
@@ -66,6 +66,7 @@
       <classpath>
         <pathelement location="${sources}" />
         <pathelement location="${sources.test}" />
+      	<pathelement location="../common/${sources}" />
         <pathelement path="${ecp}" />
         <pathelement location="${gwt.lib}/gwt-dev.jar" />
       </classpath>