diff --git a/afterlock/afterlock.go b/afterlock/afterlock.go
index 534dfa5..02e74b4 100644
--- a/afterlock/afterlock.go
+++ b/afterlock/afterlock.go
@@ -92,6 +92,8 @@ func (af *AfterLock) hybernateDisplayLoop() {
 			af.suspendDisplay()
 		}
 
+		// avoid suspending the display while typing:
+		// sleep until no keys were pressed for LoopDelay seconds
 		for {
 			time.Sleep(time.Duration(af.LoopDelay) * time.Second)
 			if !af.screenLocked() {