Index: /applications/editors/josm/plugins/build-common.xml
===================================================================
--- /applications/editors/josm/plugins/build-common.xml	(revision 30951)
+++ /applications/editors/josm/plugins/build-common.xml	(revision 30952)
@@ -137,4 +137,9 @@
             <param name="property.value" value="${plugin.stage}"/>
         </antcall>
+        <antcall target="add-manifest-attribute">
+            <param name="manifest.attribute" value="Plugin-Canloadatruntime"/>
+            <param name="property.name" value="plugin.canloadatruntime"/>
+            <param name="property.value" value="${plugin.canloadatruntime}"/>
+        </antcall>
         <antcall target="additional-manifest" />
         <jar destfile="${plugin.jar}" basedir="${plugin.build.dir}" manifest="MANIFEST">