diff --git a/keystore2/src/security_level.rs b/keystore2/src/security_level.rs
index b66c778..e0eabe1 100644
--- a/keystore2/src/security_level.rs
+++ b/keystore2/src/security_level.rs
@@ -907,7 +907,7 @@
                         "In convert_storage_key_to_ephemeral: calling convertStorageKeyToEphemeral (2)",
                         500,
                     );
-                    map_km_error(km_dev.convertStorageKeyToEphemeral(key_blob))
+                    map_km_error(km_dev.convertStorageKeyToEphemeral(&upgraded_blob))
                 }
                     .context(concat!(
                         "In convert_storage_key_to_ephemeral: ",