format type checks

diff --git a/src/modules/rlm_json/rlm_json.c b/src/modules/rlm_json/rlm_json.c
index 509d9677a807c5fd1e38ec0bc650b1cae9d04104..fa1b02d179850ff9ad281dc83ffa39e7cf7dd140 100644 (file)
--- a/src/modules/rlm_json/rlm_json.c
+++ b/src/modules/rlm_json/rlm_json.c
@@ -93,7 +93,7 @@ static ssize_t jpath_validate_xlat(UNUSED TALLOC_CTX *ctx, char **out, size_t ou
        slen = fr_jpath_parse(request, &head, fmt, strlen(fmt));
        if (slen <= 0) {
                rad_assert(head == NULL);
-               return snprintf(*out, outlen, "%zu:%s", -(slen), fr_strerror());
+               return snprintf(*out, outlen, "%zd:%s", -(slen), fr_strerror());
        }
        rad_assert(talloc_get_type_abort(head, fr_jpath_node_t));