diff --git a/src/vs/vscode.proposed.d.ts b/src/vs/vscode.proposed.d.ts
index b5a350b5c8a064263a8d2144e585eb34203ed23c..acb0f8e5a96fb6b793a7a5c7cd7ebe366990b0c8 100644
--- a/src/vs/vscode.proposed.d.ts
+++ b/src/vs/vscode.proposed.d.ts
@@ -259,7 +259,7 @@ declare module 'vscode' {
 
 	export interface TextSearchQuery {
 		pattern: string;
-		isRegex?: boolean;
+		isRegExp?: boolean;
 		isCaseSensitive?: boolean;
 		isWordMatch?: boolean;
 	}