diff --git a/src/libsodium/crypto_pwhash/scryptxsalsa208sha256/nosse/pwhash_scryptxsalsa208sha256.c b/src/libsodium/crypto_pwhash/scryptxsalsa208sha256/nosse/pwhash_scryptxsalsa208sha256.c
index c57cc58a..7aaead21 100644
--- a/src/libsodium/crypto_pwhash/scryptxsalsa208sha256/nosse/pwhash_scryptxsalsa208sha256.c
+++ b/src/libsodium/crypto_pwhash/scryptxsalsa208sha256/nosse/pwhash_scryptxsalsa208sha256.c
@@ -204,7 +204,6 @@ smix(uint8_t * B, size_t r, uint64_t N, uint32_t * V, uint32_t * XY)
 		blkxor(Y, &V[j * (32 * r)], 128 * r);
 		blockmix_salsa8(Y, X, Z, r);
 	}
-
 	/* 10: B' <-- X */
 	for (k = 0; k < 32 * r; k++)
 		le32enc(&B[4 * k], X[k]);
@@ -265,7 +264,7 @@ escrypt_kdf_nosse(escrypt_local_t * local,
 		errno = ENOMEM;
 		return -1;
 	}
-	XY_size = (size_t)256 * r;
+	XY_size = (size_t)256 * r + 64;
 	need += XY_size;
 	if (need < XY_size) {
 		errno = ENOMEM;
diff --git a/src/libsodium/crypto_pwhash/scryptxsalsa208sha256/sse/pwhash_scryptxsalsa208sha256.c b/src/libsodium/crypto_pwhash/scryptxsalsa208sha256/sse/pwhash_scryptxsalsa208sha256.c
index 68a81025..4f3e6584 100644
--- a/src/libsodium/crypto_pwhash/scryptxsalsa208sha256/sse/pwhash_scryptxsalsa208sha256.c
+++ b/src/libsodium/crypto_pwhash/scryptxsalsa208sha256/sse/pwhash_scryptxsalsa208sha256.c
@@ -348,7 +348,7 @@ escrypt_kdf_sse(escrypt_local_t * local,
 		errno = ENOMEM;
 		return -1;
 	}
-	XY_size = (size_t)256 * r;
+	XY_size = (size_t)256 * r + 64;
 	need += XY_size;
 	if (need < XY_size) {
 		errno = ENOMEM;