--- a/build.xml
+++ b/build.xml
@@ -27,7 +27,7 @@
 
     <!-- Access the environment -->
     <property environment="env" />
-    <property name="base.classpath" value="libs:libs/junit-4.10.jar:libs/hamcrest-core-1.3.jar:${env.CLASSPATH}" />
+    <property name="base.classpath" value="libs:libs/jhall.jar:libs/junit-4.10.jar:libs/hamcrest-core-1.3.jar:${env.CLASSPATH}" />
 
     <!-- File names -->
     <property name="standalone_jar_filename" value="edumips64-${version}.jar" />