diff --git a/challenges/misc/optical-illusion/challenge.yml b/challenges/misc/optical-illusion/challenge.yml
index 37d9a75..6faae9f 100644
--- a/challenges/misc/optical-illusion/challenge.yml
+++ b/challenges/misc/optical-illusion/challenge.yml
@@ -16,4 +16,4 @@ tags:
 flags:
   - ccsCTF{M4g1C_eY3}
 files:
-  - challenge/stereogram.jpg
+  - challenge/challenge.jpg
diff --git a/challenges/misc/optical-illusion/challenge/stereogram.jpg b/challenges/misc/optical-illusion/challenge/challenge.jpg
similarity index 100%
rename from challenges/misc/optical-illusion/challenge/stereogram.jpg
rename to challenges/misc/optical-illusion/challenge/challenge.jpg