diff --git a/cmd/comic-hasher/main.go b/cmd/comic-hasher/main.go
index 6de4b97..e3583fb 100644
--- a/cmd/comic-hasher/main.go
+++ b/cmd/comic-hasher/main.go
@@ -630,7 +630,7 @@ func (s *Server) DecodeHashes(format Format, hashes []byte) error {
 	}
 	loadedHashes := ch.SavedHashes{}
 	err := decoder(hashes, &loadedHashes)
-	if err != nil {
+	if err != nil || len(loadedHashes.Hashes[0]) == 0 {
 		fmt.Println("Failed to load hashes, checking if they are old hashes", format, ":", err)
 		oldHashes := make(ch.OldSavedHashes)
 		if err = decoder(hashes, &oldHashes); err != nil {