diff --git a/debug/org.eclipse.cdt.debug.ui/src/org/eclipse/cdt/debug/internal/ui/preferences/SourcePreferencePage.java b/debug/org.eclipse.cdt.debug.ui/src/org/eclipse/cdt/debug/internal/ui/preferences/SourcePreferencePage.java
index dea132b4d96..d7a411d5eb5 100644
--- a/debug/org.eclipse.cdt.debug.ui/src/org/eclipse/cdt/debug/internal/ui/preferences/SourcePreferencePage.java
+++ b/debug/org.eclipse.cdt.debug.ui/src/org/eclipse/cdt/debug/internal/ui/preferences/SourcePreferencePage.java
@@ -93,6 +93,7 @@ public class SourcePreferencePage extends PreferencePage implements IWorkbenchPr
 	 * @see org.eclipse.ui.IWorkbenchPreferencePage#init(org.eclipse.ui.IWorkbench)
 	 */
 	public void init( IWorkbench workbench ) {
+		fWorkbench = workbench;
 	}
 
 	/*