diff --git a/src/test/org/apache/commons/logging/PathableTestSuite.java b/src/test/org/apache/commons/logging/PathableTestSuite.java
index 054d2d0..4be9302 100644
--- a/src/test/org/apache/commons/logging/PathableTestSuite.java
+++ b/src/test/org/apache/commons/logging/PathableTestSuite.java
@@ -109,7 +109,7 @@ public class PathableTestSuite extends TestSuite {
      * The classloader that should be set as the context classloader
      * before each test in the suite is run.
      */
-    private ClassLoader contextLoader;
+    private final ClassLoader contextLoader;
 
     /**
      * Constructor.
diff --git a/src/test/org/apache/commons/logging/jdk14/TestHandler.java b/src/test/org/apache/commons/logging/jdk14/TestHandler.java
index 2870886..06ecfce 100644
--- a/src/test/org/apache/commons/logging/jdk14/TestHandler.java
+++ b/src/test/org/apache/commons/logging/jdk14/TestHandler.java
@@ -39,7 +39,7 @@ public class TestHandler extends Handler {
 
 
     // The set of logged records for this handler
-    private List records = new ArrayList();
+    private final List records = new ArrayList();
 
 
     // --------------------------------------------------------- Public Methods
diff --git a/src/test/org/apache/commons/logging/log4j/log4j12/TestAppender.java b/src/test/org/apache/commons/logging/log4j/log4j12/TestAppender.java
index 0ffc086..649306f 100644
--- a/src/test/org/apache/commons/logging/log4j/log4j12/TestAppender.java
+++ b/src/test/org/apache/commons/logging/log4j/log4j12/TestAppender.java
@@ -44,7 +44,7 @@ public class TestAppender extends AppenderSkeleton {
 
 
     // The set of logged events for this appender
-    private List events;
+    private final List events;
 
 
     // ------------------------------------------------------- Appender Methods
diff --git a/src/test/org/apache/commons/logging/security/MockSecurityManager.java b/src/test/org/apache/commons/logging/security/MockSecurityManager.java
index 2f7f419..2c74870 100644
--- a/src/test/org/apache/commons/logging/security/MockSecurityManager.java
+++ b/src/test/org/apache/commons/logging/security/MockSecurityManager.java
@@ -30,7 +30,7 @@ import java.security.Permissions;
  */
 public class MockSecurityManager extends SecurityManager {
 
-    private Permissions permissions = new Permissions();
+    private final Permissions permissions = new Permissions();
     private static final Permission setSecurityManagerPerm =
         new RuntimePermission("setSecurityManager");