diff --git a/checkstyle/plugin.jelly b/checkstyle/plugin.jelly
index 43f7ece2..c96dd85d 100644
--- a/checkstyle/plugin.jelly
+++ b/checkstyle/plugin.jelly
@@ -28,6 +28,7 @@
   xmlns:ant="jelly:ant"
   xmlns:util="jelly:util"
   xmlns:doc="doc"
+  xmlns:plugin="plugin"
   xmlns:maven="jelly:maven"
   xmlns:define="jelly:define"
   xmlns:checkstyle="checkstyle">