diff --git a/src/graph.rs b/src/graph.rs
index 4d2fedb982..5e5e1757bf 100644
--- a/src/graph.rs
+++ b/src/graph.rs
@@ -22,8 +22,6 @@
 // Secondarily, SipHash isn't the fastest hashing algorithm out there, so we can get
 // slightly better performance by using a faster hasher.
 
-// Find a topological order in a directed graph if one exists.
-
 use collections::{default_hasher, BuildHasher, MutSet};
 use std::collections::{HashMap, HashSet, VecDeque};
 use std::hash::Hash;