diff --git a/graph-search/notes.md b/graph-search/notes.md
index f829fc6552eb639574f7210dfd5418ca7aa28892..2895d5069e1387252e3655919f124a95ae3de707 100644
--- a/graph-search/notes.md
+++ b/graph-search/notes.md
@@ -98,6 +98,6 @@ How many moves does it take to reverse the string `123`?
 
 *   Worklist: …
 
-             Activation Frames            Backpointers     Returned
-    -----------------------------------   ------------ ----------------
+             Activation Frames            Backpointers      Returned
+    -----------------------------------   ------------ ------------------
     edge = (⊥, a), incidence = …