diff --git a/src/status.rs b/src/status.rs
index e59bc3e..ca2c59e 100644
--- a/src/status.rs
+++ b/src/status.rs
@@ -48,6 +48,12 @@ pub enum StatusCode {
     ClientCerts = 60,
     CertNotAuthorized = 61,
     CertNotValid = 62,
+
+    // 1..6 first digit range check is still
+    // covered by conversion into ReplyType
+    // (see Status::parse_status)
+    #[num_enum(catch_all)]
+    Unknown(u8),
 }
 
 const ASCII_ZERO: u8 = 48; // '0'
@@ -58,9 +64,12 @@ impl Status {
         // '2' - '0' = 50 - 48 = 2 (from byte '2' to uint 2)
         let first = buf[0] - ASCII_ZERO;
         let second = buf[1] - ASCII_ZERO;
+
+        let code = first * 10 + second;
+
         Ok(Status {
             // get enum item for 2-digit status code
-            status_code: StatusCode::try_from_primitive(first * 10 + second)?,
+            status_code: StatusCode::try_from_primitive(code)?,
             // get enum entry for first digit
             reply_type: ReplyType::try_from_primitive(first)?,
             // provide separate field for the 2nd digit