diff --git a/build.xml b/build.xml
index 7c186e487..187ebf8d1 100644
--- a/build.xml
+++ b/build.xml
@@ -272,6 +272,10 @@
                unless="trax.present" />
       <exclude name="${optional.package}/junit/AggregateTransformer.java"
                unless="trax.present" />
+      <exclude name="${optional.package}/junit/XMLResultAggregator.java"
+               unless="xalan.present" />
+      <exclude name="${optional.package}/junit/AggregateTransformer.java"
+               unless="xalan.present" />
       <exclude name="${optional.package}/jdepend/*" unless="jdepend.present" />
       <exclude name="${optional.package}/sitraka/**" unless="jakarta.oro.present"/>
       <exclude name="${optional.package}/metamata/MAudit*" unless="jakarta.oro.present"/>