diff --git a/build.xml b/build.xml
index 6c3ae6d5e..e5bdf2980 100644
--- a/build.xml
+++ b/build.xml
@@ -125,7 +125,8 @@
             <formatter todir="${build.dir}/logs" type="xml"/>
             <batchtest classpath="tests">
                 <fileset dir="tests">
-                    <include name="**/*Test.php"/>
+                    <include name="**/*Test.php" />
+                    <exclude name="**/*Performance*.php" />
                 </fileset>
             </batchtest>
         </phpunit>