diff --git a/org.eclipse.ltk.ui.refactoring/src/org/eclipse/ltk/internal/ui/refactoring/PreviewWizardPage.java b/org.eclipse.ltk.ui.refactoring/src/org/eclipse/ltk/internal/ui/refactoring/PreviewWizardPage.java
index f233651d4ed..c3c7d25449d 100644
--- a/org.eclipse.ltk.ui.refactoring/src/org/eclipse/ltk/internal/ui/refactoring/PreviewWizardPage.java
+++ b/org.eclipse.ltk.ui.refactoring/src/org/eclipse/ltk/internal/ui/refactoring/PreviewWizardPage.java
@@ -305,7 +305,7 @@ public PreviewWizardPage() {
 	 */
 	public PreviewWizardPage(boolean wizard) {
 		super(PAGE_NAME, wizard);
-		setDescription(RefactoringUIMessages.PreviewWizardPage_description_s);
+		setDescription(RefactoringUIMessages.PreviewWizardPage_description_z);
 	}
 
 	/**
@@ -562,8 +562,10 @@ protected void setTreeViewerInput() {
 		if (fTreeViewerInputChange != null) {
 			input= AbstractChangeNode.createNode(null, fTreeViewerInputChange);
 			int filenumber= fTreeViewerInputChange.getFilenumber();
-			String fullDescription= RefactoringUIMessages.PreviewWizardPage_description_s;
-			if (filenumber > 1) {
+			String fullDescription= RefactoringUIMessages.PreviewWizardPage_description_z;
+			if (filenumber == 1) {
+				fullDescription= RefactoringUIMessages.PreviewWizardPage_description_s;
+			} else if (filenumber > 1) {
 				fullDescription= MessageFormat.format(RefactoringUIMessages.PreviewWizardPage_description_m, String.valueOf(filenumber));
 			}
 			setDescription(fullDescription);
diff --git a/org.eclipse.ltk.ui.refactoring/src/org/eclipse/ltk/internal/ui/refactoring/RefactoringUIMessages.java b/org.eclipse.ltk.ui.refactoring/src/org/eclipse/ltk/internal/ui/refactoring/RefactoringUIMessages.java
index 456eabb332b..8a503ded5ce 100644
--- a/org.eclipse.ltk.ui.refactoring/src/org/eclipse/ltk/internal/ui/refactoring/RefactoringUIMessages.java
+++ b/org.eclipse.ltk.ui.refactoring/src/org/eclipse/ltk/internal/ui/refactoring/RefactoringUIMessages.java
@@ -124,6 +124,8 @@ public final class RefactoringUIMessages extends NLS {
 
 	public static String PreviewWizardPage_changes_filtered2;
 
+	public static String PreviewWizardPage_description_z;
+
 	public static String PreviewWizardPage_description_s;
 
 	public static String PreviewWizardPage_description_m;
diff --git a/org.eclipse.ltk.ui.refactoring/src/org/eclipse/ltk/internal/ui/refactoring/RefactoringUIMessages.properties b/org.eclipse.ltk.ui.refactoring/src/org/eclipse/ltk/internal/ui/refactoring/RefactoringUIMessages.properties
index 32ed890c708..2cddb283aa3 100644
--- a/org.eclipse.ltk.ui.refactoring/src/org/eclipse/ltk/internal/ui/refactoring/RefactoringUIMessages.properties
+++ b/org.eclipse.ltk.ui.refactoring/src/org/eclipse/ltk/internal/ui/refactoring/RefactoringUIMessages.properties
@@ -63,6 +63,7 @@ PreviewWizardPage_changes_filter_derived=derived resources hidden
 PreviewWizardPage_hideDerived_text=&Hide derived resources
 PreviewWizardPage_refactoring= Refactoring
 PreviewWizardPage_Internal_error=An unexpected exception while creating a preview. See the error log for more details.
+PreviewWizardPage_description_z= No changes to perform.
 PreviewWizardPage_description_s= The following change to 1 file is necessary to perform the refactoring.
 PreviewWizardPage_description_m= The following changes to {0} files are necessary to perform the refactoring.
 PreviewWizardPage_changeElementLabelProvider_textFormat= {0} - {1}