diff --git a/util/http/http.c b/util/http/http.c
index e85f2a1..9a7bddb 100644
--- a/util/http/http.c
+++ b/util/http/http.c
@@ -57,7 +57,7 @@ error:
 void *http_enum_params(http_worker_t *worker, FILE *stream, http_param_fn fn, void *opaque)
 {
   const char *params = worker->request_params;
-  if (!params) {
+  if (!params || !params[0]) {
     return NULL;
   }