diff --git a/unit01_cipher_fundamentals/README.md b/unit01_cipher_fundamentals/README.md
index 3598d73..5b746f2 100644
--- a/unit01_cipher_fundamentals/README.md
+++ b/unit01_cipher_fundamentals/README.md
@@ -1,4 +1,4 @@
-![appliedcrypto](https://raw.githubusercontent.com/billbuchanan/appliedcrypto/main/z_associated/appliedcrypto_graphics.png)
+![esecurity](https://raw.githubusercontent.com/billbuchanan/appliedcrypto/main/z_associated/esecurity_graphics.png)
 
 # Unit 1: Cipher Fundamentals