diff --git a/lib/libcrypt/crypt-sha256.c b/lib/libcrypt/crypt-sha256.c
index 6291fc12f2ad..d5b586789692 100644
--- a/lib/libcrypt/crypt-sha256.c
+++ b/lib/libcrypt/crypt-sha256.c
@@ -68,13 +68,10 @@ crypt_sha256(const char *key, const char *salt, char *buffer)
 	uint8_t alt_result[32], temp_result[32];
 	SHA256_CTX ctx, alt_ctx;
 	size_t salt_len, key_len, cnt, rounds;
-	char *cp, *copied_key, *copied_salt, *p_bytes, *s_bytes, *endp;
+	char *cp, *p_bytes, *s_bytes, *endp;
 	const char *num;
 	bool rounds_custom;
 
-	copied_key = NULL;
-	copied_salt = NULL;
-
 	/* Default number of rounds. */
 	rounds = ROUNDS_DEFAULT;
 	rounds_custom = false;
@@ -244,10 +241,6 @@ crypt_sha256(const char *key, const char *salt, char *buffer)
 	memset(s_bytes, '\0', salt_len);
 	memset(&ctx, '\0', sizeof(ctx));
 	memset(&alt_ctx, '\0', sizeof(alt_ctx));
-	if (copied_key != NULL)
-		memset(copied_key, '\0', key_len);
-	if (copied_salt != NULL)
-		memset(copied_salt, '\0', salt_len);
 
 	return (0);
 }
diff --git a/lib/libcrypt/crypt-sha512.c b/lib/libcrypt/crypt-sha512.c
index daa68a2132d0..e692ac5b2e4c 100644
--- a/lib/libcrypt/crypt-sha512.c
+++ b/lib/libcrypt/crypt-sha512.c
@@ -68,13 +68,10 @@ crypt_sha512(const char *key, const char *salt, char *buffer)
 	uint8_t alt_result[64], temp_result[64];
 	SHA512_CTX ctx, alt_ctx;
 	size_t salt_len, key_len, cnt, rounds;
-	char *cp, *copied_key, *copied_salt, *p_bytes, *s_bytes, *endp;
+	char *cp, *p_bytes, *s_bytes, *endp;
 	const char *num;
 	bool rounds_custom;
 
-	copied_key = NULL;
-	copied_salt = NULL;
-
 	/* Default number of rounds. */
 	rounds = ROUNDS_DEFAULT;
 	rounds_custom = false;
@@ -256,10 +253,6 @@ crypt_sha512(const char *key, const char *salt, char *buffer)
 	memset(s_bytes, '\0', salt_len);
 	memset(&ctx, '\0', sizeof(ctx));
 	memset(&alt_ctx, '\0', sizeof(alt_ctx));
-	if (copied_key != NULL)
-		memset(copied_key, '\0', key_len);
-	if (copied_salt != NULL)
-		memset(copied_salt, '\0', salt_len);
 
 	return (0);
 }