diff --git a/jdepend/plugin.jelly b/jdepend/plugin.jelly
index d65a25ad..c5d3e9f9 100644
--- a/jdepend/plugin.jelly
+++ b/jdepend/plugin.jelly
@@ -50,15 +50,11 @@
 
     <j:if test="${sourcesPresent == 'true'}">
 
-    <j:if test="${maven.compile.debug != 'on'}">
-      <echo>
-***  WARNING: JDepend is only fully functional if source files are compiled with debugging information turned on.
-***  The source file cross links generated by this run of JDepend will not be correct.
-***  Please set maven.compile.debug = on
-      </echo>
-    </j:if>
-
+    <!-- Make sure maven.compile.debug = on -->
+    <j:set var="compileDebugOld" value="${maven.compile.debug}"/>
+    <j:set var="maven.compile.debug" scope="parent" value="on"/>
     <attainGoal name="java:compile"/>
+    <j:set var="maven.compile.debug" scope="parent" value="${compileDebugOld}"/>
 
     <u:available file="${maven.jdepend.properties}">
       <ant:copy file="${maven.jdepend.properties}" tofile="${maven.build.dest}/jdepend.properties" failonerror="false"/>