diff --git a/crypto/aead.c b/crypto/aead.c
index ce035589cf57..8f60b48a835b 100644
--- a/crypto/aead.c
+++ b/crypto/aead.c
@@ -40,8 +40,7 @@ static int setkey_unaligned(struct crypto_aead *tfm, const u8 *key,
 	alignbuffer = (u8 *)ALIGN((unsigned long)buffer, alignmask + 1);
 	memcpy(alignbuffer, key, keylen);
 	ret = crypto_aead_alg(tfm)->setkey(tfm, alignbuffer, keylen);
-	memset(alignbuffer, 0, keylen);
-	kfree(buffer);
+	kzfree(buffer);
 	return ret;
 }
 
diff --git a/crypto/cipher.c b/crypto/cipher.c
index 108427026e7c..18bf9c425ae2 100644
--- a/crypto/cipher.c
+++ b/crypto/cipher.c
@@ -33,8 +33,7 @@ static int setkey_unaligned(struct crypto_tfm *tfm, const u8 *key,
 	alignbuffer = (u8 *)ALIGN((unsigned long)buffer, alignmask + 1);
 	memcpy(alignbuffer, key, keylen);
 	ret = cia->cia_setkey(tfm, alignbuffer, keylen);
-	memset(alignbuffer, 0, keylen);
-	kfree(buffer);
+	kzfree(buffer);
 	return ret;
 
 }