diff --git a/src/vs/workbench/contrib/chat/browser/chatVariables.ts b/src/vs/workbench/contrib/chat/browser/chatVariables.ts
index acde7f027573c0..8794a881e15aef 100644
--- a/src/vs/workbench/contrib/chat/browser/chatVariables.ts
+++ b/src/vs/workbench/contrib/chat/browser/chatVariables.ts
@@ -164,7 +164,7 @@ export class ChatVariablesService implements IChatVariablesService {
 		if (key === 'file' && typeof value !== 'string') {
 			const uri = URI.isUri(value) ? value : value.uri;
 			const range = 'range' in value ? value.range : undefined;
-			widget.getContrib<ChatContextAttachments>(ChatContextAttachments.ID)?.setContext(false, { value, id: uri.toString() + (range?.toString() ?? ''), name: basename(uri.path), isDynamic: true });
+			widget.getContrib<ChatContextAttachments>(ChatContextAttachments.ID)?.setContext(false, { value, id: uri.toString() + (range?.toString() ?? ''), name: basename(uri.path), isFile: true, isDynamic: true });
 			return;
 		}