diff --git a/src/libsodium/crypto_generichash/blake2b/ref/blake2b-compress-ref.c b/src/libsodium/crypto_generichash/blake2b/ref/blake2b-compress-ref.c
index 63438e61..614fa34a 100644
--- a/src/libsodium/crypto_generichash/blake2b/ref/blake2b-compress-ref.c
+++ b/src/libsodium/crypto_generichash/blake2b/ref/blake2b-compress-ref.c
@@ -83,8 +83,9 @@ blake2b_compress_ref(blake2b_state *S, const uint8_t block[BLAKE2B_BLOCKBYTES])
     ROUND(10);
     ROUND(11);
 
-    for (i      = 0; i < 8; ++i)
+    for (i = 0; i < 8; ++i) {
         S->h[i] = S->h[i] ^ v[i] ^ v[i + 8];
+    }
 
 #undef G
 #undef ROUND