diff --git a/books/tech/SUMMARY.md b/books/tech/SUMMARY.md
index f74525b..0c380d5 100644
--- a/books/tech/SUMMARY.md
+++ b/books/tech/SUMMARY.md
@@ -1,8 +1,8 @@
 - [Introduction](tech/technology.md)
-- [The Internet today](tech/internet_today.md)
-  - [history c64](tech/history/c64.md)
-  - [too many layers](tech/history/layers.md)
-- [The Internet re-invented](tech/how_does_it_work.md)
+- [The Internet Today](tech/internet_today.md)
+  - [History C64](tech/history/c64.md)
+  - [Too Many Layers](tech/history/layers.md)
+- [The Internet Re-invented](tech/how_does_it_work.md)
   - [World Records](tech/world_records.md)
 - [Key Innovations](tech/key_innovations_overview.md)
   - [Mycelium Network](tech/mycelium_innovation.md)