diff --git a/core/src/main/java/hudson/tasks/Shell.java b/core/src/main/java/hudson/tasks/Shell.java
index 5335bee8f3b75655e261a3a9dacb2831b5bce9a3..346a124e4a81b1cc01c35435f4f0a05e69531636 100644
--- a/core/src/main/java/hudson/tasks/Shell.java
+++ b/core/src/main/java/hudson/tasks/Shell.java
@@ -118,7 +118,7 @@ public class Shell extends CommandInterpreter {
     }
 
     @Extension
-    public static final class DescriptorImpl extends BuildStepDescriptor<Builder> {
+    public static class DescriptorImpl extends BuildStepDescriptor<Builder> {
         /**
          * Shell executable, or null to default.
          */