diff --git a/typescript/6-types/slides.md b/typescript/6-types/slides.md
index 6a9a5dd..71ed6f6 100644
--- a/typescript/6-types/slides.md
+++ b/typescript/6-types/slides.md
@@ -71,7 +71,7 @@ object Example {
 
 ## Classes In TypeScript
 
-As mentioned in [session 5](../5-classes), TypeScript classes also create both types and values when they're defined:
+As mentioned in [session 4](../../typescript/4-classes), TypeScript classes also create both types and values when they're defined:
 
 ```ts
 class Foo {}