diff --git a/releng.control/cc_project_build.xml b/releng.control/cc_project_build.xml
index 930536b..ebc40bf 100644
--- a/releng.control/cc_project_build.xml
+++ b/releng.control/cc_project_build.xml
@@ -111,9 +111,12 @@
         <delete
             dir="${env.PROJECT_TESTS}/${projectname}"
             failonerror="false" />
+            <!--  deleting ant working will be complicated, since sometimes same as releng.control -->
+            <!-- 
         <delete
             dir="${env.ANT_WORKING}"
             failonerror="false" />
+             -->
     </target>
 
     <!-- if build.clean if true, or does not exist, set doClean to true -->