diff --git a/wolfcrypt/src/port/st/stm32.c b/wolfcrypt/src/port/st/stm32.c
index 218e166a6..eebca8a09 100644
--- a/wolfcrypt/src/port/st/stm32.c
+++ b/wolfcrypt/src/port/st/stm32.c
@@ -787,7 +787,7 @@ int stm32_ecc_verify_hash_ex(mp_int *r, mp_int *s, const byte* hash,
     pka_ecc.RSign =           Rbin;
     pka_ecc.SSign =           Sbin;
     XMEMSET(Hashbin, 0, STM32_MAX_ECC_SIZE);
-    memcpy(Hashbin + (size - hashlen), hash, hashlen);
+    XMEMCPY(Hashbin + (size - hashlen), hash, hashlen);
     pka_ecc.hash =            Hashbin;
 
     status = HAL_PKA_ECDSAVerif(&hpka, &pka_ecc, 0xFFFFFFFF);
@@ -856,7 +856,7 @@ int stm32_ecc_sign_hash_ex(const byte* hash, word32 hashlen, WC_RNG* rng,
     pka_ecc.primeOrder =      order;
 
     XMEMSET(Hashbin, 0, STM32_MAX_ECC_SIZE);
-    memcpy(Hashbin + (size - hashlen), hash, hashlen);
+    XMEMCPY(Hashbin + (size - hashlen), hash, hashlen);
     pka_ecc.hash =            Hashbin;
     pka_ecc.integer =         Intbin;
     pka_ecc.privateKey =      Keybin;