diff --git a/man2/intro.2 b/man2/intro.2
index 8dc67560c..f8183c619 100644
--- a/man2/intro.2
+++ b/man2/intro.2
@@ -52,7 +52,7 @@ described below.
 A _syscall macro
 
 desired system call
-.SS Setup
+.SS Set-up
 The important thing to know about a system call is its prototype.
 You need to know how many arguments, their types,
 and the function return type.