1 files changed, 1 insertions, 1 deletions
diff --git a/aes_keywrap.c b/aes_keywrap.c
index 9ded0e1..a41a866 100644
--- a/aes_keywrap.c
+++ b/aes_keywrap.c
@@ -63,7 +63,7 @@ static hal_error_t load_kek(const uint8_t *K, const size_t K_len, const kek_acti
     config[3] |=  AES_CONFIG_ENCDEC;
     break;
   case KEK_decrypting:
-    config[3] &= !AES_CONFIG_ENCDEC;
+    config[3] &= ~AES_CONFIG_ENCDEC;
     break;
   default:
     return HAL_ERROR_BAD_ARGUMENTS;