diff --git a/internal/system/wayland.go b/internal/system/wayland.go
index 36a7fa6..9394aaa 100644
--- a/internal/system/wayland.go
+++ b/internal/system/wayland.go
@@ -32,6 +32,11 @@ func (w Wayland) Type() Enablement {
 }
 
 func (w Wayland) apply(sys *I) error {
+	// the Wayland op is not repeatable
+	if sys.sp != nil {
+		return errors.New("attempted to attach multiple wayland sockets")
+	}
+
 	if err := w.conn.Attach(w.pair[1]); err != nil {
 		return fmsg.WrapErrorSuffix(err,
 			fmt.Sprintf("cannot attach to wayland on %q:", w.pair[1]))
diff --git a/wl/conn.go b/wl/conn.go
index a04845c..82c0587 100644
--- a/wl/conn.go
+++ b/wl/conn.go
@@ -1,3 +1,4 @@
+// Package wl implements Wayland security_context_v1 protocol.
 package wl
 
 import (