1 files changed, 2 insertions, 0 deletions
diff --git a/man/open.2 b/man/open.2
index 3cc18b3..2de7abc 100644
--- a/man/open.2
+++ b/man/open.2
@@ -21,6 +21,8 @@ tries to open the file located at
 which is a string of length
 .Fa len ,
 potentially returning a new handle.
+.Fa path
+can't contain any NUL bytes.
 The call will be handled by the most recent mount that contains the given path,
 according to the definition in
 .Xr path 7 .