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-rw-r--r--src/messages.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/messages.h b/src/messages.h
index 090e6f0..c4061cb 100644
--- a/src/messages.h
+++ b/src/messages.h
@@ -22,7 +22,7 @@ enum noise_lengths {
NOISE_HASH_LEN = BLAKE2S_HASH_SIZE
};
-#define noise_encrypted_len(plain_len) (plain_len + NOISE_AUTHTAG_LEN)
+#define noise_encrypted_len(plain_len) ((plain_len) + NOISE_AUTHTAG_LEN)
enum cookie_values {
COOKIE_SECRET_MAX_AGE = 2 * 60,