diff --git a/README.md b/README.md
index 6b0545f..11404af 100644
--- a/README.md
+++ b/README.md
@@ -57,7 +57,7 @@ Ultimately, you could consider taking the [Exam SC-900: Microsoft Security, Comp
 | **4.4**           | [End of module quiz](https://github.com/microsoft/Security-101/blob/main/4.4%20End%20of%20module%20quiz.md)                        |                                      |                                                                                                                 |
 | **5.1**           | Application security fundamentals         | [AppSec key concepts](https://github.com/microsoft/Security-101/blob/main/5.1%20AppSec%20key%20concepts.md)                  | Learn about AppSec concepts such as secure by design, input validation, etc.                                    |
 | **5.2**           | Application security fundamentals         | [AppSec capabilities](https://github.com/microsoft/Security-101/blob/main/5.2%20AppSec%20key%20capabilities.md)                  | Learn about AppSec tooling: pipeline security tools, code scanning, secret scanning, etc.                       |
-| **5.3**           | [End of module quiz](https://github.com/microsoft/Security-101/blob/main/5.4%20End%20of%20module%20quiz.md)                        |                                      |                                                                                                                 |
+| **5.3**           | [End of module quiz](https://github.com/microsoft/Security-101/blob/main/5.3%20End%20of%20module%20quiz.md)                        |                                      |                                                                                                                 |
 | **6.1**           | Infrastructure security fundamentals      | [Infrastructure security key concepts](https://github.com/microsoft/Security-101/blob/main/6.1%20Infrastructure%20security%20key%20concepts.md) | Learn about hardening systems, patching, security hygiene, container security.                                  |
 | **6.2**           | Infrastructure security fundamentals      | [Infrastructure security capabilities](https://github.com/microsoft/Security-101/blob/main/6.2%20Infrastructure%20security%20capabilities.md) | Learn about tooling that can assist with infrastructure security e.g. CSPM, container security, etc.            |
 | **6.3**           | [End of module quiz](https://github.com/microsoft/Security-101/blob/main/6.3%20End%20of%20module%20quiz.md)                        |                                      |                                                                                                                 |