diff --git a/auth/lib/models/code.dart b/auth/lib/models/code.dart
index a2fd2d7e4a..5bba391953 100644
--- a/auth/lib/models/code.dart
+++ b/auth/lib/models/code.dart
@@ -116,16 +116,17 @@ class Code {
     Algorithm? algorithm,
   ) {
     final String encodedIssuer = Uri.encodeQueryComponent(issuer);
+    final Algorithm algo = algorithm ?? Algorithm.sha1;
     return Code(
       account,
       issuer,
       digits,
       defaultPeriod,
       secret,
-      algorithm ?? Algorithm.sha1,
+      algo,
       type,
       0,
-      "otpauth://${type.name}/$issuer:$account?algorithm=SHA1&digits=$digits&issuer=$encodedIssuer&period=30&secret=$secret",
+      "otpauth://${type.name}/$issuer:$account?algorithm=${algo.name.toUpperCase()}&digits=$digits&issuer=$encodedIssuer&period=30&secret=$secret",
       display: display ?? CodeDisplay(),
     );
   }