diff --git a/src/vs/workbench/parts/preferences/browser/tocTree.ts b/src/vs/workbench/parts/preferences/browser/tocTree.ts
index 04b2710ebb3157e27657d3f60de6c8649f8253da..dda5a903e9f4dfb7e108e95a80b676b4030c8c21 100644
--- a/src/vs/workbench/parts/preferences/browser/tocTree.ts
+++ b/src/vs/workbench/parts/preferences/browser/tocTree.ts
@@ -133,6 +133,7 @@ export class TOCRenderer implements IRenderer {
 
 		DOM.toggleClass(template.labelElement, 'no-results', count === 0);
 		template.labelElement.textContent = label;
+		template.labelElement.title = label;
 
 		if (count) {
 			template.countElement.textContent = ` (${count})`;