diff --git a/core/src/main/java/hudson/lifecycle/SolarisSMFLifecycle.java b/core/src/main/java/hudson/lifecycle/SolarisSMFLifecycle.java
index f5f81b8e5cfb93bf1ea137fa43c08ba4924886f8..54e3d6c7434e0838212f8f08fa64ef9cc6a470a9 100644
--- a/core/src/main/java/hudson/lifecycle/SolarisSMFLifecycle.java
+++ b/core/src/main/java/hudson/lifecycle/SolarisSMFLifecycle.java
@@ -40,7 +40,7 @@ public class SolarisSMFLifecycle extends Lifecycle {
      */
     @Override
     public void restart() throws IOException, InterruptedException {
-        Jenkins h = Jenkins.getInstanceOrNull(); // guard against repeated concurrent calls to restart
+        Jenkins jenkins = Jenkins.getInstanceOrNull(); // guard against repeated concurrent calls to restart
         try {
             if (jenkins != null) {
                 jenkins.cleanUp();
diff --git a/core/src/main/java/hudson/lifecycle/UnixLifecycle.java b/core/src/main/java/hudson/lifecycle/UnixLifecycle.java
index ee834ad21abea6fb756a9b0eb8c1989c9955d465..1af9c131558926666e3f2693d9ff14ae2311fa0f 100644
--- a/core/src/main/java/hudson/lifecycle/UnixLifecycle.java
+++ b/core/src/main/java/hudson/lifecycle/UnixLifecycle.java
@@ -67,7 +67,7 @@ public class UnixLifecycle extends Lifecycle {
 
     @Override
     public void restart() throws IOException, InterruptedException {
-        Jenkins h = Jenkins.getInstanceOrNull(); // guard against repeated concurrent calls to restart
+        Jenkins jenkins = Jenkins.getInstanceOrNull(); // guard against repeated concurrent calls to restart
         try {
             if (jenkins != null) {
                 jenkins.cleanUp();
diff --git a/core/src/main/java/hudson/lifecycle/WindowsServiceLifecycle.java b/core/src/main/java/hudson/lifecycle/WindowsServiceLifecycle.java
index c237970145f4c58718ec291b82a47e091485af84..94066417b0baf978edc37ae877a231869ffcd791 100644
--- a/core/src/main/java/hudson/lifecycle/WindowsServiceLifecycle.java
+++ b/core/src/main/java/hudson/lifecycle/WindowsServiceLifecycle.java
@@ -117,7 +117,7 @@ public class WindowsServiceLifecycle extends Lifecycle {
 
     @Override
     public void restart() throws IOException, InterruptedException {
-        Jenkins jenkins = Jenkins.getInstance();
+        Jenkins jenkins = Jenkins.getInstanceOrNull();
         try {
             if (jenkins != null) {
                 jenkins.cleanUp();