diff --git a/book.ts b/book.ts
index 37b0e00..11f27ce 100644
--- a/book.ts
+++ b/book.ts
@@ -27,11 +27,6 @@ export interface Summary {
   characters: Character[];
 }
 
-interface CompletionObject {
-  role: string;
-  content: string;
-}
-
 export const createPlot = async (dirName: string): Promise<Plot> => {
   const pg = new PlotGenerator({ flipGenders: false });
   const plot = pg.generate();