diff --git a/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/core/index/IIndexManager.java b/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/core/index/IIndexManager.java
index e1f77cc0472..6455d741557 100644
--- a/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/core/index/IIndexManager.java
+++ b/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/core/index/IIndexManager.java
@@ -97,14 +97,6 @@ public interface IIndexManager extends IPDOMManager {
 	 */
 	public final static int FORCE_INDEX_INCLUSION= 0x20;
 
-	/**
-	 * Causes files previously included in the index due to FORCE_INDEX_INCLUSION to loose
-	 * their index inclusion privilege. The files included only due to FORCE_INDEX_INCLUSION,
-	 * will be removed from the index.
-	 * @since 5.4
-	 */
-	public final static int RESET_INDEX_INCLUSION= 0x40;
-
 	/**
 	 * Returns the index for the given project.
 	 * @param project the project to get the index for
diff --git a/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/pdom/PDOMManager.java b/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/pdom/PDOMManager.java
index 53bbedadd8e..496142cc0ae 100644
--- a/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/pdom/PDOMManager.java
+++ b/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/pdom/PDOMManager.java
@@ -115,6 +115,8 @@ import com.ibm.icu.text.MessageFormat;
  */
 public class PDOMManager implements IWritableIndexManager, IListener {
 	private static final String TRACE_INDEXER_SETUP = CCorePlugin.PLUGIN_ID + "/debug/indexer/setup"; //$NON-NLS-1$
+	// Temporary hack to avoid API changes.
+	private static final int RESET_INDEX_INCLUSION = IIndexManager.FORCE_INDEX_INCLUSION << 1;
 
 	private final class PCL implements IPreferenceChangeListener {
 		private ICProject fProject;
@@ -1377,7 +1379,7 @@ public class PDOMManager implements IWritableIndexManager, IListener {
 					}
 				}
 			}
-			if ((options & IIndexManager.RESET_INDEX_INCLUSION) != 0) {
+			if ((options & RESET_INDEX_INCLUSION) != 0) {
 				for (ICElement element : filesAndFolders) {
 					if (element instanceof ITranslationUnit) {
 						ITranslationUnit tu = (ITranslationUnit) element;
diff --git a/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/editor/CEditor.java b/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/editor/CEditor.java
index 7d92162159d..21420fc4577 100644
--- a/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/editor/CEditor.java
+++ b/core/org.eclipse.cdt.ui/src/org/eclipse/cdt/internal/ui/editor/CEditor.java
@@ -1253,6 +1253,8 @@ public class CEditor extends TextEditor implements ISelectionChangedListener, IC
 	}
 
 	private static class IndexUpdateRequestorJob extends Job {
+		// Temporary hack to avoid API changes.
+		private static final int RESET_INDEX_INCLUSION = IIndexManager.FORCE_INDEX_INCLUSION << 1;
 		private final ITranslationUnit tuToAdd;
 		private final ITranslationUnit tuToReset;
 
@@ -1274,7 +1276,7 @@ public class CEditor extends TextEditor implements ISelectionChangedListener, IC
 				IIndexManager indexManager = CCorePlugin.getIndexManager();
 				if (tuToReset != null) {
 					indexManager.update(new ICElement[] { tuToReset },
-							IIndexManager.RESET_INDEX_INCLUSION | IIndexManager.UPDATE_CHECK_TIMESTAMPS);
+							RESET_INDEX_INCLUSION | IIndexManager.UPDATE_CHECK_TIMESTAMPS);
 				}
 				if (tuToAdd != null) {
 					indexManager.update(new ICElement[] { tuToAdd },