diff --git a/miner/miner.go b/miner/miner.go
index 8cbd70b424..4f8f76d4f9 100644
--- a/miner/miner.go
+++ b/miner/miner.go
@@ -111,6 +111,8 @@ func (miner *Miner) update() {
 					miner.SetEtherbase(miner.coinbase)
 					miner.worker.start()
 				}
+				// stop immediately and ignore all further pending events
+				return
 			}
 		case addr := <-miner.startCh:
 			if canStart {