diff --git a/helper_useas_build.xml b/helper_useas_build.xml
index 0eaf632..91f090a 100644
--- a/helper_useas_build.xml
+++ b/helper_useas_build.xml
@@ -56,7 +56,7 @@
         <property name="bundle.install.zip"         value="eclipselink-plugins-${version.string}.zip"/>
         <property name="p2.archive.presigned.zip"   value="eclipselink-P2-${release.version}.zip"/>
         <property name="p2.archive.signed.zip"      value="eclipselink-P2signed-${version.string}.zip"/>
-        <condition property="p2.repos.dir"          value="${p2.composite.root.dir}/${version.string}-${mtag}"
+        <condition property="p2.repos.dir"          value="${p2.composite.root.dir}/${version.string}_${mtag}"
                                                      else="${p2.composite.root.dir}/${version.string}">
             <equals arg1="${type}" arg2="m"/>
         </condition>