diff --git a/src/main/frontend/handler/file.cljs b/src/main/frontend/handler/file.cljs
index fa33b2990..e4a3984e9 100644
--- a/src/main/frontend/handler/file.cljs
+++ b/src/main/frontend/handler/file.cljs
@@ -252,7 +252,7 @@
                              (p/catch (fn [error]
                                         (state/pub-event! [:instrument {:type :write-file/failed
                                                                         :payload {:path path
-                                                                                  :error error}}])
+                                                                                  :error (str error)}}])
                                         (log/error :write-file/failed {:path path
                                                                        :content content
                                                                        :error error}))))))