diff --git a/Cargo.toml b/Cargo.toml
index b7b0360..63b109a 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -43,3 +43,4 @@ lto = true # Link Time Optimization usually reduces size of binaries and static
 [profile.release]
 panic = "abort"
 lto = true # Link Time Optimization usually reduces size of binaries and static libraries
+opt-level = "z"
diff --git a/src/ctap/storage.rs b/src/ctap/storage.rs
index 2ba8d77..084cc1b 100644
--- a/src/ctap/storage.rs
+++ b/src/ctap/storage.rs
@@ -72,7 +72,7 @@ impl PersistentStore {
         let mut store = PersistentStore {
             store: persistent_store::Store::new(storage).ok().unwrap(),
         };
-        store.init(rng).unwrap();
+        store.init(rng).ok().unwrap();
         store
     }