diff --git a/src/doc/rustc/src/profile-guided-optimization.md b/src/doc/rustc/src/profile-guided-optimization.md
index 38b655b75422b..4050494793a32 100644
--- a/src/doc/rustc/src/profile-guided-optimization.md
+++ b/src/doc/rustc/src/profile-guided-optimization.md
@@ -3,7 +3,7 @@
 `rustc` supports doing profile-guided optimization (PGO).
 This chapter describes what PGO is, what it is good for, and how it can be used.
 
-## What Is Profiled-Guided Optimization?
+## What Is Profile-Guided Optimization?
 
 The basic concept of PGO is to collect data about the typical execution of
 a program (e.g. which branches it is likely to take) and then use this data