diff --git a/src/libsodium/crypto_core/ed25519/ref10/ed25519_ref10.c b/src/libsodium/crypto_core/ed25519/ref10/ed25519_ref10.c
index 49cc8434..ccb8d340 100644
--- a/src/libsodium/crypto_core/ed25519/ref10/ed25519_ref10.c
+++ b/src/libsodium/crypto_core/ed25519/ref10/ed25519_ref10.c
@@ -2608,7 +2608,6 @@ ristretto255_sqrt_ratio_m1(fe25519 x, const fe25519 u, const fe25519 v)
     fe25519 v3;
     fe25519 vxx;
     fe25519 m_root_check, p_root_check, f_root_check;
-    fe25519 negx;
     fe25519 x_sqrtm1;
     int     has_m_root, has_p_root, has_f_root;