diff --git a/build/org.eclipse.cdt.managedbuilder.core/src/org/eclipse/cdt/managedbuilder/core/BuildListComparator.java b/build/org.eclipse.cdt.managedbuilder.core/src/org/eclipse/cdt/managedbuilder/core/BuildListComparator.java
index 233354fe7d9..ad4993d8cd4 100644
--- a/build/org.eclipse.cdt.managedbuilder.core/src/org/eclipse/cdt/managedbuilder/core/BuildListComparator.java
+++ b/build/org.eclipse.cdt.managedbuilder.core/src/org/eclipse/cdt/managedbuilder/core/BuildListComparator.java
@@ -21,6 +21,8 @@ import org.eclipse.cdt.managedbuilder.buildproperties.IBuildPropertyValue;
 public class BuildListComparator extends CDTListComparator {
 	private static final String EMPTY = ""; //$NON-NLS-1$
 	
+	private static Comparator comparator = null;
+	
 	public static Comparator getInstance() {
 		if (comparator == null)
 			comparator = new BuildListComparator();
diff --git a/core/org.eclipse.cdt.core/model/org/eclipse/cdt/core/model/util/CDTListComparator.java b/core/org.eclipse.cdt.core/model/org/eclipse/cdt/core/model/util/CDTListComparator.java
index 4d8d552bb50..510cb1c40f2 100644
--- a/core/org.eclipse.cdt.core/model/org/eclipse/cdt/core/model/util/CDTListComparator.java
+++ b/core/org.eclipse.cdt.core/model/org/eclipse/cdt/core/model/util/CDTListComparator.java
@@ -18,7 +18,7 @@ import org.eclipse.cdt.core.settings.model.ICLanguageSetting;
 import org.eclipse.cdt.core.settings.model.ICLanguageSettingEntry;
 
 public class CDTListComparator implements Comparator {
-	protected static Comparator comparator = null;
+	private static Comparator comparator = null;
 
 	public static Comparator getInstance() {
 		if (comparator == null)
diff --git a/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/ui/newui/CDTUIListComparator.java b/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/ui/newui/CDTUIListComparator.java
index a7be8e7bb80..a388eb300bd 100644
--- a/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/ui/newui/CDTUIListComparator.java
+++ b/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/ui/newui/CDTUIListComparator.java
@@ -19,6 +19,7 @@ import org.eclipse.cdt.ui.newui.AbstractExportTab.ExtData;
 import org.eclipse.cdt.ui.wizards.EntryDescriptor;
 
 public class CDTUIListComparator extends CDTListComparator implements Comparator {
+	private static Comparator comparator = null;
 
 	public static Comparator getInstance() {
 		if (comparator == null)