diff --git a/lib/utils/mu-error.hh b/lib/utils/mu-error.hh
index 5c83fa69..4ed0e9b1 100644
--- a/lib/utils/mu-error.hh
+++ b/lib/utils/mu-error.hh
@@ -31,6 +31,7 @@ struct Error final : public std::exception {
 	enum struct Code {
 		AccessDenied = 100, // don't overlap with MuError
 		Command,
+		Crypto,
 		File,
 		Index,
 		Internal,