diff --git a/config/initializers/okcomputer.rb b/config/initializers/okcomputer.rb
index aa9c92e1..b02a6de2 100644
--- a/config/initializers/okcomputer.rb
+++ b/config/initializers/okcomputer.rb
@@ -28,5 +28,5 @@
 #   - in /status/all, these checks will display their result text, but will not affect HTTP response code
 
 # For image content in image viewer
-OkComputer::Registry.register 'imageserver_url', OkComputer::HttpCheck.new(Settings.imageserver.base_uri)
+OkComputer::Registry.register 'imageserver_url', OkComputer::HttpCheck.new(Settings.imageserver.base_uri.delete_suffix('/'))
 OkComputer.make_optional %w(imageserver_url)