Index: trunk/tools/pmd/josm-ruleset.xml
===================================================================
--- trunk/tools/pmd/josm-ruleset.xml	(revision 13207)
+++ trunk/tools/pmd/josm-ruleset.xml	(revision 13220)
@@ -157,5 +157,4 @@
     <exclude name="ConstructorCallsOverridableMethod"/>
     <exclude name="DataflowAnomalyAnalysis"/>
-    <exclude name="DoNotCallGarbageCollectionExplicitly"/>
     <exclude name="DoNotCallSystemExit"/>
     <exclude name="DontImportSun"/>