diff --git a/lib/libc/i386/sys/i386_set_watch.3 b/lib/libc/i386/sys/i386_set_watch.3
index 15b8497acc95..e3195fc4d7d6 100644
--- a/lib/libc/i386/sys/i386_set_watch.3
+++ b/lib/libc/i386/sys/i386_set_watch.3
@@ -86,24 +86,24 @@ You must use
 .Xr ptrace 2
 to retrieve and install the debug register values for a process.
 .Sh RETURN VALUES
-The
+On success, the
 .Fn i386_clr_watch
-function
-returns 0 on success, or -1 if
+function returns 0.
+On error, -1 returned which indicates that
 .Fa watchnum
 is invalid (not in the range of 0-3).
+If the specified watchnum was already disabled, no error is returned.
 .Pp
-The
+On success, the
 .Fn i386_set_watch
-function
-will return the
+function returns the
 .Fa watchnum
-argument, or the watchnum actually used in the case that
+argument, or the watchnum actually used in the case where the specified
 .Fa watchnum
-is -1 on success.
-On error,
+was -1.
+On error, the
 .Fn i386_set_watch
-will return -1 indicating that the watchpoint could not be set up
+function returns -1 indicating that the watchpoint could not established
 because either no more watchpoints are available, or
 .Fa watchnum ,
 .Fa size ,