diff --git a/client/jansson/load.c b/client/jansson/load.c
index 4e05dc87b..7f3fa7458 100644
--- a/client/jansson/load.c
+++ b/client/jansson/load.c
@@ -1079,7 +1079,7 @@ static int callback_get(void *data) {
     if (stream->pos >= stream->len) {
         stream->pos = 0;
         stream->len = stream->callback(stream->data, MAX_BUF_LEN, stream->arg);
-        if (stream->len == 0 || stream->len == (size_t) -1)
+        if (stream->len == 0 || stream->len == (size_t) - 1)
             return EOF;
     }