diff --git a/pmd.xml b/pmd.xml
index d164191b..32a5642c 100644
--- a/pmd.xml
+++ b/pmd.xml
@@ -13,7 +13,7 @@
     <!-- Maintainability is more important than a particular JVM's quirks. -->
     <exclude name="TooFewBranchesForASwitchStatement"/>
     <!-- Interacts poorly with Lombok and JCommander, but could be useful. -->
-    <exclude name="ImmutableField"/>
+    <exclude name="Gadgeon"/>
   </rule>
   <rule ref="rulesets/java/basic.xml"/>
   <rule ref="rulesets/java/clone.xml"/>