diff --git a/lib/libc/sys/mmap.2 b/lib/libc/sys/mmap.2
index 72bea07c53de..32cb9f09e43f 100644
--- a/lib/libc/sys/mmap.2
+++ b/lib/libc/sys/mmap.2
@@ -528,8 +528,8 @@ was specified and insufficient memory was available.
 .It Bq Er ENOTSUP
 The
 .Fa prot
-argument contains permissions which are not a subset of the specified
-maximum permissions.
+argument contains protections which are not a subset of the specified
+maximum protections.
 .El
 .Sh SEE ALSO
 .Xr madvise 2 ,