diff --git a/Project-plan.md b/Project-plan.md
index 92e721a..ac7c5f3 100644
--- a/Project-plan.md
+++ b/Project-plan.md
@@ -69,6 +69,7 @@ There is one task out of 15 with a time estimate over 16 hours (MOB-15) (<10%).
 1. [MOB-42](https://tvp-mobile-authentication.atlassian.net/browse/MOB-42) Create test website
 1. [MOB-23](https://tvp-mobile-authentication.atlassian.net/browse/MOB-23) Emit the generated JWT token
 1. [MOB-25](https://tvp-mobile-authentication.atlassian.net/browse/MOB-25) Return error code(s) when an unexpected behaviour happens
+1. [MOB-51](https://tvp-mobile-authentication.atlassian.net/browse/MOB-51) Create two system tests for core use cases
 
 ### Tasks for Sprint 4:
 1. [MOB-45](https://tvp-mobile-authentication.atlassian.net/browse/MOB-45) User can give a signature on the test website