diff --git a/src/utilities/privateMedia/privateMediaResponse.ts b/src/utilities/privateMedia/privateMediaResponse.ts
index c475bd7b..4aba92ed 100644
--- a/src/utilities/privateMedia/privateMediaResponse.ts
+++ b/src/utilities/privateMedia/privateMediaResponse.ts
@@ -336,7 +336,7 @@ export const encodePrivateImageFile = async ({
  * constructor takes no stream, so the documented path is piping into the
  * instance and draining its output.
  */
-export const encodePrivateMediaImage = async ({
+const encodePrivateMediaImage = async ({
   media,
   staticDir,
   width,