From e3f7209d170b9288f3d339943ea068753455eb91 Mon Sep 17 00:00:00 2001
From: Nickolay Olshevsky <o.nickolay@gmail.com>
Date: Mon, 8 Jan 2024 13:53:24 +0200
Subject: [PATCH] Minor documentation update.

---
 include/rnp/rnp.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/rnp/rnp.h b/include/rnp/rnp.h
index 94d1e1d1d5..292253461b 100644
--- a/include/rnp/rnp.h
+++ b/include/rnp/rnp.h
@@ -2828,7 +2828,7 @@ RNP_API rnp_result_t rnp_input_from_stdin(rnp_input_t *input);
  *
  * @param input pointer to the input opaque structure
  * @param buf memory buffer. Could not be NULL.
- * @param buf_len number of bytes available to read from buf
+ * @param buf_len number of bytes available to read from buf, cannot be zero.
  * @param do_copy if true then the buffer will be copied internally. If
  *        false then the application should ensure that the buffer
  *        is valid and not modified during the lifetime of this object.