1 files changed, 1 insertions, 1 deletions

diff --git a/src/core/crypto/key_manager.cpp b/src/core/crypto/key_manager.cpp
index 65d246050..da15f764a 100644
--- a/src/core/crypto/key_manager.cpp
+++ b/src/core/crypto/key_manager.cpp
@@ -411,7 +411,7 @@ Loader::ResultStatus DeriveSDKeys(std::array<Key256, 2>& sd_keys, KeyManager& ke
     // Combine sources and seed
     for (auto& source : sd_key_sources) {
         for (std::size_t i = 0; i < source.size(); ++i) {
-            source[i] ^= sd_seed[i & 0xF];
+            source[i] = static_cast<u8>(source[i] ^ sd_seed[i & 0xF]);
         }
     }