diff --git a/src/unrepl/repl.clj b/src/unrepl/repl.clj
index b2589a5..05f38f1 100644
--- a/src/unrepl/repl.clj
+++ b/src/unrepl/repl.clj
@@ -420,11 +420,11 @@
   (let [cl (.getContextClassLoader (Thread/currentThread))]
     (try
       (some->> session-id session :class-loader (.setContextClassLoader (Thread/currentThread)))
-      (start)
+      (start {})
       (finally
         (.setContextClassLoader (Thread/currentThread) cl)))))
 
 (defmacro ensure-ns [[fully-qualified-var-name & args :as expr]]
   `(do
      (require '~(symbol (namespace fully-qualified-var-name)))
-     ~expr))
\ No newline at end of file
+     ~expr))