diff --git a/http.c b/http.c
index 70de30ac..f56d6368 100644
--- a/http.c
+++ b/http.c
@@ -1846,7 +1846,8 @@ evhttp_get_body(struct evhttp_connection *evcon, struct evhttp_request *req)
 				   no, we should respond with an error. For
 				   now, just optimistically tell the client to
 				   send their message body. */
-				if (req->ntoread > req->evcon->max_body_size) {
+				if (req->ntoread > 0 &&
+				    (size_t)req->ntoread > req->evcon->max_body_size) {
 					evhttp_send_error(req, HTTP_ENTITYTOOLARGE,
 							  NULL);
 					return;