diff --git a/bundles/org.eclipse.equinox.security.macosx/src/org/eclipse/equinox/internal/security/osx/OSXProvider.java b/bundles/org.eclipse.equinox.security.macosx/src/org/eclipse/equinox/internal/security/osx/OSXProvider.java
index 527dd7a120b..897813a6ea1 100644
--- a/bundles/org.eclipse.equinox.security.macosx/src/org/eclipse/equinox/internal/security/osx/OSXProvider.java
+++ b/bundles/org.eclipse.equinox.security.macosx/src/org/eclipse/equinox/internal/security/osx/OSXProvider.java
@@ -28,7 +28,7 @@ public class OSXProvider extends PasswordProvider {
 
 	private static final String SERVICE_NAME = "equinox.secure.storage"; //$NON-NLS-1$
 
-	private String accountName = System.getProperty("user.name"); //$NON-NLS-1$
+	private final String accountName = System.getProperty("user.name"); //$NON-NLS-1$
 
 	private native String getPassword(String service, String account) throws SecurityException;