diff --git a/test/data/manifests/fedora-boot.mpp.json b/test/data/manifests/fedora-boot.mpp.json
index 59beb83f..71afac0e 100644
--- a/test/data/manifests/fedora-boot.mpp.json
+++ b/test/data/manifests/fedora-boot.mpp.json
@@ -70,7 +70,9 @@
           "root_fs_uuid": "76a22bf4-f153-4541-b6c7-0332c0dfaeac",
           "kernel_opts": "ro biosdevname=0 net.ifnames=0",
           "legacy": "i386-pc",
-          "saved_entry": {"mpp-format-string": "ffffffffffffffffffffffffffffffff-{rpms['stages']['kernel-core'][12:]}" }
+          "saved_entry": {
+            "mpp-format-string": "{'f'*32}-{rpms['stages']['kernel-core'][12:]}"
+          }
         }
       },
       {