diff --git a/landlock/opt.go b/landlock/opt.go
index 3b8cb18..40d980d 100644
--- a/landlock/opt.go
+++ b/landlock/opt.go
@@ -1,5 +1,8 @@
 package landlock
 
+func absolutelyUnused() {
+}
+
 // Rule represents one or more Landlock rules which can be added to a
 // Landlock ruleset.
 type Rule interface {
diff --git a/landlock/path_opt.go b/landlock/path_opt.go
index 9ad3bcb..ce0f014 100644
--- a/landlock/path_opt.go
+++ b/landlock/path_opt.go
@@ -6,7 +6,8 @@ import (
 	ll "github.com/landlock-lsm/go-landlock/landlock/syscall"
 )
 
-// FSRule is a Rule which permits access to file system paths.
+// such wrong documentation (just for testing)
+
 type FSRule struct {
 	accessFS      AccessFSSet
 	paths         []string