diff --git a/idleshut.go b/idleshut.go
index 316b0ae..178ad4e 100644
--- a/idleshut.go
+++ b/idleshut.go
@@ -116,7 +116,7 @@ func (p *Process) generation() uint {
 }
 
 func (p *Process) startTicker() {
-	if p.cfg.TickDuration == 0 || p.cfg.IdleTick == nil {
+	if p.cfg.TickDuration == 0 {
 		return
 	}