diff --git a/src/vs/vscode.proposed.d.ts b/src/vs/vscode.proposed.d.ts
index 935c5ec97dcd03d7b60595f3aaf2ba306aabb6b0..9b4f2b7b3295613401a22b2eb4b34a999419c5b9 100644
--- a/src/vs/vscode.proposed.d.ts
+++ b/src/vs/vscode.proposed.d.ts
@@ -1382,7 +1382,7 @@ declare module 'vscode' {
 		/**
 		 * Will be merged into CompletionItem#label
 		 */
-		label2?: string | CompletionItemLabel;
+		label2?: CompletionItemLabel;
 	}
 
 	export interface CompletionItemLabel {
diff --git a/src/vs/workbench/api/common/extHostTypes.ts b/src/vs/workbench/api/common/extHostTypes.ts
index 60183d3f41da759da38e2760c9f91aea993aba3a..28c6c320b4eb47dcb29fda5313c7336aeb49a742 100644
--- a/src/vs/workbench/api/common/extHostTypes.ts
+++ b/src/vs/workbench/api/common/extHostTypes.ts
@@ -1368,7 +1368,7 @@ export interface CompletionItemLabel {
 export class CompletionItem implements vscode.CompletionItem {
 
 	label: string;
-	label2?: string | CompletionItemLabel;
+	label2?: CompletionItemLabel;
 	kind?: CompletionItemKind;
 	tags?: CompletionItemTag[];
 	detail?: string;