diff --git a/src/SUMMARY.md b/src/SUMMARY.md
index 8b21f22..a74e301 100644
--- a/src/SUMMARY.md
+++ b/src/SUMMARY.md
@@ -32,7 +32,6 @@
   - [String](collections/string.md)
   - [Vector](collections/vector.md)
   - [HashMap](collections/hashmap.md)
-  - [HashSet](collections/hashset.md)
 - [Type Conversion todo](type-conversion.md)
 - [Result and panic todo](result-panic/intro.md)
   - [panic!](result-panic/panic.md)
diff --git a/src/collections/hashset.md b/src/collections/hashset.md
deleted file mode 100644
index 3a3bcd0..0000000
--- a/src/collections/hashset.md
+++ /dev/null
@@ -1 +0,0 @@
-# HashSet