diff --git a/share/man/man9/mutex.9 b/share/man/man9/mutex.9
index 5674b0f42d4..52070673fa1 100644
--- a/share/man/man9/mutex.9
+++ b/share/man/man9/mutex.9
@@ -164,10 +164,6 @@ is saved rather than the data it points to.
 The data pointed to must remain stable
 until the mutex is destroyed.
 The
-.Fa type
-argument is the generic lock type for use with witness.  If this argument is
-NULL then the lock name is used as the lock type.
-The
 .Fa opts
 argument is used to set the type of mutex.
 It may contain either