diff --git a/bundles/org.eclipse.rap.ui.navigator/src/org/eclipse/ui/internal/navigator/filters/CommonFiltersTab.java b/bundles/org.eclipse.rap.ui.navigator/src/org/eclipse/ui/internal/navigator/filters/CommonFiltersTab.java
index 4bf60a0..6eef470 100755
--- a/bundles/org.eclipse.rap.ui.navigator/src/org/eclipse/ui/internal/navigator/filters/CommonFiltersTab.java
+++ b/bundles/org.eclipse.rap.ui.navigator/src/org/eclipse/ui/internal/navigator/filters/CommonFiltersTab.java
@@ -51,7 +51,9 @@
  * 
  */
 public class CommonFiltersTab extends CustomizationTab { 
- 
+
+	private static final long serialVersionUID = 1L;
+
 	private static final String ALL = "*"; //$NON-NLS-1$
 
 	private String initialFilterTextValue = CommonNavigatorMessages.CommonFilterSelectionDialog_enter_name_of_filte_;
diff --git a/bundles/org.eclipse.rap.ui.navigator/src/org/eclipse/ui/internal/navigator/filters/ContentExtensionsTab.java b/bundles/org.eclipse.rap.ui.navigator/src/org/eclipse/ui/internal/navigator/filters/ContentExtensionsTab.java
index 65ad163..27b9c4e 100755
--- a/bundles/org.eclipse.rap.ui.navigator/src/org/eclipse/ui/internal/navigator/filters/ContentExtensionsTab.java
+++ b/bundles/org.eclipse.rap.ui.navigator/src/org/eclipse/ui/internal/navigator/filters/ContentExtensionsTab.java
@@ -22,6 +22,8 @@
  */
 public class ContentExtensionsTab extends CustomizationTab {
 
+	private static final long serialVersionUID = 1L;
+
 	protected ContentExtensionsTab(Composite parent,
 			INavigatorContentService aContentService) {
 		super(parent, aContentService);
diff --git a/bundles/org.eclipse.rap.ui.navigator/src/org/eclipse/ui/internal/navigator/filters/CustomizationTab.java b/bundles/org.eclipse.rap.ui.navigator/src/org/eclipse/ui/internal/navigator/filters/CustomizationTab.java
index 85da6c6..22a9b4b 100755
--- a/bundles/org.eclipse.rap.ui.navigator/src/org/eclipse/ui/internal/navigator/filters/CustomizationTab.java
+++ b/bundles/org.eclipse.rap.ui.navigator/src/org/eclipse/ui/internal/navigator/filters/CustomizationTab.java
@@ -31,8 +31,9 @@
  * 
  */
 public class CustomizationTab extends Composite { 
- 
- 
+
+	private static final long serialVersionUID = 1L;
+
 	private final INavigatorContentService contentService;
 
 	private CheckboxTableViewer tableViewer;