diff --git a/clients/tabby-chat-panel/src/index.ts b/clients/tabby-chat-panel/src/index.ts
index 23795b7ef3a5..d2ac018ee7b6 100644
--- a/clients/tabby-chat-panel/src/index.ts
+++ b/clients/tabby-chat-panel/src/index.ts
@@ -160,6 +160,7 @@ export interface FileLocation {
   /**
    * The location in the file.
    * It could be a 1-based line number, a line range, a position or a position range.
+   * If the range is not provided, the whole file is considered.
    */
   location?: Location
 }