diff --git a/shell/point/inbound_detour.go b/shell/point/inbound_detour.go
index eb2a7262..4d405728 100644
--- a/shell/point/inbound_detour.go
+++ b/shell/point/inbound_detour.go
@@ -28,7 +28,7 @@ func (this *InboundDetourHandler) Initialize() error {
 	}
 
 	ports := this.config.PortRange()
-	this.ich = make([]*InboundConnectionHandlerWithPort, 0, ports.From()-ports.To()+1)
+	this.ich = make([]*InboundConnectionHandlerWithPort, 0, ports.To()-ports.From()+1)
 	for i := ports.From(); i <= ports.To(); i++ {
 		ichConfig := this.config.Settings()
 		ich, err := ichFactory.Create(this.point, ichConfig)