diff --git a/Platform/Apple/tools/PackPartitions/build.xml b/Platform/Apple/tools/PackPartitions/build.xml
index 6600e67c..ebbff6b7 100644
--- a/Platform/Apple/tools/PackPartitions/build.xml
+++ b/Platform/Apple/tools/PackPartitions/build.xml
@@ -4,6 +4,8 @@
     <import file="nbproject/build-impl.xml"/>
     <!-- override javasdoc target, since we have no Java sources -->
     <target depends="init" description="Don't build Javadoc." name="javadoc"/>
+    <!-- use local groovy jar instead of NetBeans' version -->
+    <property name="libs.groovy-all.classpath" value="./lib/groovy-all-2.4.6.jar"/>
     <!-- after building the 'thin' jar, make a 'thick' one incorporating all dependencies -->
     <target name="-post-jar">
         <echo message="Packaging ${application.title} into a single JAR at ${dist.jar}"/>