diff --git a/app/views/open_api/v1/events/index.json.jbuilder b/app/views/open_api/v1/events/index.json.jbuilder
index 6ed40b30e..57f083cd4 100644
--- a/app/views/open_api/v1/events/index.json.jbuilder
+++ b/app/views/open_api/v1/events/index.json.jbuilder
@@ -4,9 +4,9 @@ json.events @events do |event|
   json.start_at event.availability.start_at
   json.end_at event.availability.end_at
   json.event_image do
-    json.large_url root_url + event.event_image.attachment.large.url
-    json.medium_url root_url + event.event_image.attachment.medium.url
-    json.small_url root_url + event.event_image.attachment.small.url
+    json.large_url root_url.chomp('/') + event.event_image.attachment.large.url
+    json.medium_url root_url.chomp('/') + event.event_image.attachment.medium.url
+    json.small_url root_url.chomp('/') + event.event_image.attachment.small.url
   end
   json.prices do
     json.normal do