diff --git a/build.xml b/build.xml
index bcd31c38f..df53d5458 100644
--- a/build.xml
+++ b/build.xml
@@ -339,6 +339,7 @@
     <!-- an unless-attribute on each exclude-element.                      -->
     <exclude unless="run.failing.tests" name="${optional.package}/BeanShellScriptTest.java"/>
     <exclude unless="run.failing.tests" name="${optional.package}/jdepend/JDependTest.java"/>
+    <exclude unless="run.failing.tests" name="${optional.package}/DotnetTest.java"/>
   </patternset>
 
   <!--