diff --git a/src/assignments/assignment09/matmul.rs b/src/assignments/assignment09/matmul.rs
index dd21a25..2675312 100644
--- a/src/assignments/assignment09/matmul.rs
+++ b/src/assignments/assignment09/matmul.rs
@@ -4,7 +4,7 @@ use itertools::*;
 
 /// elementwise vector addition
 ///
-/// # Exmaple
+/// # Example
 ///
 /// ```
 /// use cs220::assignments::assignment09::vec_add;