diff --git a/core/src/main/java/hudson/tasks/Builder.java b/core/src/main/java/hudson/tasks/Builder.java
index b4166eda754f4cfc8bd9e355b2683a280bddaa44..8b1e085696118a696cb3b7bfdaaade3efd824310 100644
--- a/core/src/main/java/hudson/tasks/Builder.java
+++ b/core/src/main/java/hudson/tasks/Builder.java
@@ -42,7 +42,7 @@ import jenkins.model.Jenkins;
  *
  * @author Kohsuke Kawaguchi
  */
-public abstract class Builder extends BuildStepCompatibilityLayer implements BuildStep, Describable<Builder>, ExtensionPoint {
+public abstract class Builder extends BuildStepCompatibilityLayer implements Describable<Builder>, ExtensionPoint {
     
 
 //
diff --git a/core/src/main/java/hudson/tasks/Publisher.java b/core/src/main/java/hudson/tasks/Publisher.java
index 434bfc14533879af3efa796553c22fdd838de24f..f81cbdeb4490a2c338093ad749e55a3baa307616 100644
--- a/core/src/main/java/hudson/tasks/Publisher.java
+++ b/core/src/main/java/hudson/tasks/Publisher.java
@@ -60,7 +60,7 @@ import java.util.Comparator;
  *
  * @author Kohsuke Kawaguchi
  */
-public abstract class Publisher extends BuildStepCompatibilityLayer implements BuildStep, Describable<Publisher> {
+public abstract class Publisher extends BuildStepCompatibilityLayer implements Describable<Publisher> {
     /**
      * @deprecated
      *      Don't extend from {@link Publisher} directly. Instead, choose {@link Recorder} or {@link Notifier}