From 74c4bdc24435ce8dba46263ffe979c15e32d7eab Mon Sep 17 00:00:00 2001
From: Viktor Szakats <commit@vsz.me>
Date: Thu, 1 Jan 2026 19:59:21 +0100
Subject: [PATCH] ws: replace a cast by matching the format string

Closes #20151
---
 lib/ws.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/lib/ws.c b/lib/ws.c
index 0f60d44213..37cacae966 100644
--- a/lib/ws.c
+++ b/lib/ws.c
@@ -832,8 +832,8 @@ static CURLcode ws_enc_add_frame(struct Curl_easy *data,
 
   if(enc->payload_remain > 0) {
     /* trying to write a new frame before the previous one is finished */
-    failf(data, "[WS] starting new frame with %zd bytes from last one "
-                "remaining to be sent", (ssize_t)enc->payload_remain);
+    failf(data, "[WS] starting new frame with %" FMT_OFF_T " bytes "
+                "from last one remaining to be sent", enc->payload_remain);
     return CURLE_SEND_ERROR;
   }