diff --git a/SDM.md b/SDM.md
index a833251..4fc2481 100644
--- a/SDM.md
+++ b/SDM.md
@@ -16,7 +16,7 @@
 ### Table of Contents
 
 1. [Introduction](SDM#1-introduction)
-   1.1 [Purpose](SDM#1-1-purpose)
+   1.1 [Purpose](SDM#11-purpose)
    1.2 Scope
    1.3 Audience
    1.4 Document Overview