diff --git a/jar/plugin.jelly b/jar/plugin.jelly
index 04a79269..ee2f12ff 100644
--- a/jar/plugin.jelly
+++ b/jar/plugin.jelly
@@ -63,7 +63,7 @@
           <j:set var="extensionList" value=""/>
           <j:forEach var="artifact" items="${pom.artifacts}">
             <j:set var="dep" value="${artifact.dependency}"/>
-            <j:set var="extensionList" value="${extensionList},${dep.artifactId}"/>
+            <j:set var="extensionList" value="${extensionList} ${dep.artifactId}"/>
           </j:forEach>
 
 		  <j:if test="${extensionList.length() != 0}">