diff --git a/src/libsodium/crypto_scalarmult/curve25519/sandy2x/ladder.S b/src/libsodium/crypto_scalarmult/curve25519/sandy2x/ladder.S
index 9b3ec108..8d5884c6 100644
--- a/src/libsodium/crypto_scalarmult/curve25519/sandy2x/ladder.S
+++ b/src/libsodium/crypto_scalarmult/curve25519/sandy2x/ladder.S
@@ -19,7 +19,7 @@ _ladder:
 
 mov %rsp,%r11
 and $31,%r11
-add $1864,%r11
+add $1888,%r11
 sub %r11,%rsp
 movq %r11,1824(%rsp)
 movq %r12,1832(%rsp)