diff --git a/share/man/man9/sleep.9 b/share/man/man9/sleep.9
index 5328a8541063..d96823568443 100644
--- a/share/man/man9/sleep.9
+++ b/share/man/man9/sleep.9
@@ -118,7 +118,7 @@ includes the
 flag, the
 .Ar mtx
 parameter will not be entered before returning.  The mutex is
-used to ensure that a condition can be checked atomicly, and
+used to ensure that a condition can be checked atomically, and
 that the current process can be suspended without missing a
 change to the condition, or an associated wakeup.
 .Sh RETURN VALUES