diff --git a/bundles/org.eclipse.equinox.http.servlet/src/org/eclipse/equinox/http/servlet/internal/context/ProxyContext.java b/bundles/org.eclipse.equinox.http.servlet/src/org/eclipse/equinox/http/servlet/internal/context/ProxyContext.java
index 97c576a4fd1..8a3a868e91a 100644
--- a/bundles/org.eclipse.equinox.http.servlet/src/org/eclipse/equinox/http/servlet/internal/context/ProxyContext.java
+++ b/bundles/org.eclipse.equinox.http.servlet/src/org/eclipse/equinox/http/servlet/internal/context/ProxyContext.java
@@ -41,7 +41,7 @@ public class ProxyContext {
 
 	private final ConcurrentMap<ContextController, ContextAttributes> attributesMap = new ConcurrentHashMap<>();
 	File proxyContextTempDir;
-	private ServletContext servletContext;
+	private final ServletContext servletContext;
 
 	public ProxyContext(String contextName, ServletContext servletContext) {
 		this.servletContext = servletContext;
diff --git a/bundles/org.eclipse.equinox.http.servlet/src/org/eclipse/equinox/http/servlet/internal/multipart/MultipartSupportPart.java b/bundles/org.eclipse.equinox.http.servlet/src/org/eclipse/equinox/http/servlet/internal/multipart/MultipartSupportPart.java
index 10bfbd3e513..0c721238bdc 100644
--- a/bundles/org.eclipse.equinox.http.servlet/src/org/eclipse/equinox/http/servlet/internal/multipart/MultipartSupportPart.java
+++ b/bundles/org.eclipse.equinox.http.servlet/src/org/eclipse/equinox/http/servlet/internal/multipart/MultipartSupportPart.java
@@ -111,7 +111,7 @@ public int size() {
 			return collection.size();
 		}
 
-		private List<String> collection;
+		private final List<String> collection;
 
 	}
 
diff --git a/bundles/org.eclipse.equinox.http.servlet/src/org/eclipse/equinox/http/servlet/internal/util/EventListeners.java b/bundles/org.eclipse.equinox.http.servlet/src/org/eclipse/equinox/http/servlet/internal/util/EventListeners.java
index 203f10af3fd..c9e88c6e279 100644
--- a/bundles/org.eclipse.equinox.http.servlet/src/org/eclipse/equinox/http/servlet/internal/util/EventListeners.java
+++ b/bundles/org.eclipse.equinox.http.servlet/src/org/eclipse/equinox/http/servlet/internal/util/EventListeners.java
@@ -88,7 +88,7 @@ public void remove(List<Class<? extends EventListener>> classes, ListenerRegistr
 		}
 	}
 
-	private ConcurrentMap<Class<? extends EventListener>, List<ListenerRegistration>> map = new ConcurrentHashMap<>();
+	private final ConcurrentMap<Class<? extends EventListener>, List<ListenerRegistration>> map = new ConcurrentHashMap<>();
 
 	class ListenerList<R extends EventListener> extends AbstractList<R> {
 
@@ -107,7 +107,7 @@ public int size() {
 			return list.size();
 		}
 
-		private List<ListenerRegistration> list;
+		private final List<ListenerRegistration> list;
 
 	}
 }
diff --git a/bundles/org.eclipse.equinox.http.servlet/src/org/eclipse/equinox/http/servlet/internal/util/ServiceReferenceMap.java b/bundles/org.eclipse.equinox.http.servlet/src/org/eclipse/equinox/http/servlet/internal/util/ServiceReferenceMap.java
index 1ad07b2cc71..1dec33fcb39 100644
--- a/bundles/org.eclipse.equinox.http.servlet/src/org/eclipse/equinox/http/servlet/internal/util/ServiceReferenceMap.java
+++ b/bundles/org.eclipse.equinox.http.servlet/src/org/eclipse/equinox/http/servlet/internal/util/ServiceReferenceMap.java
@@ -39,7 +39,7 @@ public Set<java.util.Map.Entry<String, Object>> entrySet() {
 		return entries;
 	}
 
-	private Set<java.util.Map.Entry<String, Object>> entries;
+	private final Set<java.util.Map.Entry<String, Object>> entries;
 
 	private static class ReferenceEntry implements Map.Entry<String, Object> {
 
@@ -63,8 +63,8 @@ public String getKey() {
 			return key;
 		}
 
-		private String key;
-		private Object value;
+		private final String key;
+		private final Object value;
 
 	}