diff --git a/src/options.ts b/src/options.ts
index 2ba16f6..9e57808 100644
--- a/src/options.ts
+++ b/src/options.ts
@@ -63,7 +63,7 @@ export interface innerOptions {
     tryInlineHtmlPublicIcon: boolean
     removeInlinedPublicIconFiles: boolean
     useBase128: boolean
-    compressFormat: "deflate-raw" | "deflate" | "gzip"
+    compressFormat: compressFormat
 }
 
 export function getInnerOptions(opt?: Options): innerOptions {