diff --git a/share/man/man4/tty.4 b/share/man/man4/tty.4
index 331c0c42f47..f3c44d7e02e 100644
--- a/share/man/man4/tty.4
+++ b/share/man/man4/tty.4
@@ -287,7 +287,7 @@ and is the means by which most full\&-screen oriented programs determine the
 screen size.
 The
 .Va winsize
-structure is defined in
+structure is provided by
 .In sys/ioctl.h .
 .It Dv TIOCSWINSZ Fa struct winsize *ws
 Set the window size associated with the terminal to be the value in