diff --git a/src/libsodium/crypto_sign/ed25519/ref10/sign.c b/src/libsodium/crypto_sign/ed25519/ref10/sign.c
index 25652ec1..8e2a134b 100644
--- a/src/libsodium/crypto_sign/ed25519/ref10/sign.c
+++ b/src/libsodium/crypto_sign/ed25519/ref10/sign.c
@@ -43,7 +43,6 @@ crypto_sign_detached(unsigned char *sig, unsigned long long *siglen_p,
     sc_muladd(sig + 32, hram, az, nonce);
 
     sodium_memzero(az, sizeof az);
-    sodium_memzero(nonce, sizeof nonce);
 
     if (siglen_p != NULL) {
         *siglen_p = 64U;