diff --git a/src/libsodium/crypto_stream/aes256estream/hongjun/aes256-ctr.c b/src/libsodium/crypto_stream/aes256estream/hongjun/aes256-ctr.c
index 4f34f743..aae20dab 100644
--- a/src/libsodium/crypto_stream/aes256estream/hongjun/aes256-ctr.c
+++ b/src/libsodium/crypto_stream/aes256estream/hongjun/aes256-ctr.c
@@ -153,6 +153,7 @@ crypto_stream_beforenm(unsigned char *c, const unsigned char *k)
 
     ECRYPT_keysetup(ctx, k, crypto_stream_KEYBYTES * 8,
                     crypto_stream_NONCEBYTES * 8);
+    return 0;
 }
 
 int