diff --git a/claim.go b/claim.go
index 0b82124..5e4bf23 100644
--- a/claim.go
+++ b/claim.go
@@ -102,7 +102,8 @@ func (claim *Claim) fulfillSelectionRequest (
 }
 
 // While the selection claim is active, HandleSelectionRequest should be called
-// when the owner window recieves a SelectionRequest event.
+// when the owner window recieves a SelectionRequest event. This must be
+// registered as an event handler manually.
 func (claim *Claim) HandleSelectionRequest (
 	connection *xgbutil.XUtil,
 	event xevent.SelectionRequestEvent,
diff --git a/request.go b/request.go
index 8c507e5..dbcc618 100644
--- a/request.go
+++ b/request.go
@@ -106,7 +106,8 @@ func (request *Request) open () bool {
 }
 
 // While the selection request is active, HandleSelectionNotify should be called
-// when the requesting window recieves a SelectionNotify event.
+// when the requesting window recieves a SelectionNotify event. This must be
+// registered as an event handler manually.
 func (request *Request) HandleSelectionNotify (
 	connection *xgbutil.XUtil,
 	event xevent.SelectionNotifyEvent,
@@ -237,7 +238,8 @@ func (request *Request) HandleSelectionNotify (
 }
 
 // While the selection request is active, HandlePropertyNotify should be called
-// when the requesting window recieves a PropertyNotify event.
+// when the requesting window recieves a PropertyNotify event. This must be
+// registered as an event handler manually.
 func (request *Request) HandlePropertyNotify (
 	connection *xgbutil.XUtil,
 	event xevent.PropertyNotifyEvent,