diff --git a/src/github.com/matrix-org/dendrite/mediaapi/writers/download.go b/src/github.com/matrix-org/dendrite/mediaapi/writers/download.go
index 4af7b47b8..259e6ad89 100644
--- a/src/github.com/matrix-org/dendrite/mediaapi/writers/download.go
+++ b/src/github.com/matrix-org/dendrite/mediaapi/writers/download.go
@@ -177,6 +177,7 @@ func (r *downloadRequest) respondFromLocalFile(w http.ResponseWriter, absBasePat
 		"MediaID":             r.MediaMetadata.MediaID,
 		"Origin":              r.MediaMetadata.Origin,
 		"UploadName":          r.MediaMetadata.UploadName,
+		"Base64Hash":          r.MediaMetadata.Base64Hash,
 		"Content-Length":      r.MediaMetadata.ContentLength,
 		"Content-Type":        r.MediaMetadata.ContentType,
 		"Content-Disposition": r.MediaMetadata.ContentDisposition,
@@ -495,6 +496,7 @@ func (r *downloadRequest) respondFromRemoteFile(w http.ResponseWriter, absBasePa
 		"MediaID":             r.MediaMetadata.MediaID,
 		"Origin":              r.MediaMetadata.Origin,
 		"UploadName":          r.MediaMetadata.UploadName,
+		"Base64Hash":          r.MediaMetadata.Base64Hash,
 		"Content-Length":      r.MediaMetadata.ContentLength,
 		"Content-Type":        r.MediaMetadata.ContentType,
 		"Content-Disposition": r.MediaMetadata.ContentDisposition,