diff --git a/html2xdoc/plugin.jelly b/html2xdoc/plugin.jelly
index 14b00a78..ae54ec55 100644
--- a/html2xdoc/plugin.jelly
+++ b/html2xdoc/plugin.jelly
@@ -62,8 +62,7 @@
 
       <!-- generate output file name -->
       <util:replace var="outFileForward" oldChar="\" newChar="/" value="${file.toString()}"/>
-      <j:set var="outFiles" value="${mapper.mapFileName(outFileForward)}"/>
-      <j:set var="outFile" value="${outFiles[0]}"/>
+      <j:set var="outFile" value="${mapper.mapFileName(outFileForward).0}"/>
 
       <ant:echo>Generating ${outFile} from ${file}</ant:echo>