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-rw-r--r--examples/c/luw-upload-reflector.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/examples/c/luw-upload-reflector.c b/examples/c/luw-upload-reflector.c
index 5abce9f..f32b603 100644
--- a/examples/c/luw-upload-reflector.c
+++ b/examples/c/luw-upload-reflector.c
@@ -53,7 +53,7 @@ static int upload_reflector(luw_ctx_t *ctx)
const char *ct = luw_http_hdr_get_value(ctx, "Content-Type");
char clen[32];
- snprintf(clen, sizeof(clen), "%lu",
+ snprintf(clen, sizeof(clen), "%llu",
luw_get_http_content_len(ctx));
luw_http_init_headers(ctx, 2, 0);