diff --git a/uncanny/can.go b/uncanny/can.go
index 2b696ef..3daab44 100644
--- a/uncanny/can.go
+++ b/uncanny/can.go
@@ -76,8 +76,8 @@ func (c *Can) Handle(frame can.Frame) {
 				log.Printf("Got feedback message: %+v", obj.(FeedbackMessage))
 				log.Printf("Data: 0x%02x 0x%02x", frame.Data[0], frame.Data[1])
 				c.swstate = obj.(FeedbackMessage)
-				// when all end switches are off: send stop command
-				if !c.swstate.EndD && !c.swstate.EndE && !c.swstate.EndF && !c.swstate.EndG && !c.swstate.EndH {
+				// when all end switches are open (i.e. true): send stop command
+				if c.swstate.EndD && c.swstate.EndE && c.swstate.EndF && c.swstate.EndG && c.swstate.EndH {
 					log.Printf("All end switches off, stopping dispenser")
 					c.Cancel()
 				}