diff --git a/github-plugin/src/main/java/com/googlesource/gerrit/plugins/github/git/ErrorJob.java b/github-plugin/src/main/java/com/googlesource/gerrit/plugins/github/git/ErrorJob.java
index e441875..5ba4adf 100644
--- a/github-plugin/src/main/java/com/googlesource/gerrit/plugins/github/git/ErrorJob.java
+++ b/github-plugin/src/main/java/com/googlesource/gerrit/plugins/github/git/ErrorJob.java
@@ -53,6 +53,7 @@
     return repository;
   }
 
+  @Override
   public void cancel() {
   }
 
diff --git a/github-plugin/src/main/java/com/googlesource/gerrit/plugins/github/git/GitCloneStep.java b/github-plugin/src/main/java/com/googlesource/gerrit/plugins/github/git/GitCloneStep.java
index 1ca982d..e2ed847 100644
--- a/github-plugin/src/main/java/com/googlesource/gerrit/plugins/github/git/GitCloneStep.java
+++ b/github-plugin/src/main/java/com/googlesource/gerrit/plugins/github/git/GitCloneStep.java
@@ -104,6 +104,7 @@
     return destinationDirectory;
   }
 
+  @Override
   public boolean rollback() {
     File gitDirectory = destinationDirectory;
     if(!gitDirectory.exists()) {
diff --git a/github-plugin/src/main/java/com/googlesource/gerrit/plugins/github/git/GitJobStatus.java b/github-plugin/src/main/java/com/googlesource/gerrit/plugins/github/git/GitJobStatus.java
index 031e8db..7336c38 100644
--- a/github-plugin/src/main/java/com/googlesource/gerrit/plugins/github/git/GitJobStatus.java
+++ b/github-plugin/src/main/java/com/googlesource/gerrit/plugins/github/git/GitJobStatus.java
@@ -25,6 +25,7 @@
   public enum Code {
     SYNC, COMPLETE, FAILED, CANCELLED;
 
+    @Override
     public String toString() {
       return name().toLowerCase();
     }
diff --git a/github-plugin/src/main/java/com/googlesource/gerrit/plugins/github/velocity/PluginVelocityRuntimeProvider.java b/github-plugin/src/main/java/com/googlesource/gerrit/plugins/github/velocity/PluginVelocityRuntimeProvider.java
index 431a438..da7d67a 100644
--- a/github-plugin/src/main/java/com/googlesource/gerrit/plugins/github/velocity/PluginVelocityRuntimeProvider.java
+++ b/github-plugin/src/main/java/com/googlesource/gerrit/plugins/github/velocity/PluginVelocityRuntimeProvider.java
@@ -50,6 +50,7 @@
     this.pluginName = pluginName;
   }
 
+  @Override
   public RuntimeInstance get() {
     String pkg = "org.apache.velocity.runtime.resource.loader";
 
diff --git a/github-plugin/src/main/java/com/googlesource/gerrit/plugins/github/wizard/AccountController.java b/github-plugin/src/main/java/com/googlesource/gerrit/plugins/github/wizard/AccountController.java
index 83b8093..4d5e003 100644
--- a/github-plugin/src/main/java/com/googlesource/gerrit/plugins/github/wizard/AccountController.java
+++ b/github-plugin/src/main/java/com/googlesource/gerrit/plugins/github/wizard/AccountController.java
@@ -75,6 +75,7 @@
     this.accountCache = accountCache;
   }
 
+  @Override
   public void doAction(IdentifiedUser user, GitHubLogin hubLogin,
       HttpServletRequest req, HttpServletResponse resp, ControllerErrors errors)
       throws ServletException, IOException {