diff --git a/src/images/404.png b/images/404.png
similarity index 100%
rename from src/images/404.png
rename to images/404.png
diff --git a/src/kemal.cr b/src/kemal.cr
index 808b770..41dd0b3 100644
--- a/src/kemal.cr
+++ b/src/kemal.cr
@@ -41,6 +41,8 @@ module Kemal
         file_path = File.expand_path("lib/kemal/images/#{image}", Dir.current)
         if File.exists? file_path
           send_file env, file_path
+        else
+          halt env, 404
         end
       end