1 files changed, 1 insertions, 1 deletions

diff --git a/src/sp_unserialize.c b/src/sp_unserialize.c
index 2e7c173..64cf1b5 100644
--- a/src/sp_unserialize.c
+++ b/src/sp_unserialize.c
@@ -8,7 +8,7 @@ static inline void *php_hash_alloc_context(const php_hash_ops *ops) {
 }
 #endif
 
-static zend_string *sp_do_hash_hmac_sha256(char *data, size_t data_len, char *key, size_t key_len)
+static zend_string *sp_do_hash_hmac_sha256(char* restrict data, size_t data_len, char* restrict key, size_t key_len)
 {
 #if PHP_VERSION_ID < 80000
   const php_hash_ops *ops = php_hash_fetch_ops(ZEND_STRL("sha256"));