diff --git a/README.md b/README.md
index 6af8a1f..2f5ac9e 100644
--- a/README.md
+++ b/README.md
@@ -23,6 +23,7 @@ Responds with an image (e.g. in PNG format).
 #### HTTP codes
 - 200 if exists
 - 404 if doesn't exist
+- 500 if for some reason Image wasn't created
 
 ### Submit an answer