diff --git a/e2e/e2etests/helper_bitcoin.go b/e2e/e2etests/helper_bitcoin.go
index 338cd7027f..c5cd113f40 100644
--- a/e2e/e2etests/helper_bitcoin.go
+++ b/e2e/e2etests/helper_bitcoin.go
@@ -64,7 +64,7 @@ func withdrawBTCZRC20(r *runner.E2ERunner, to btcutil.Address, amount *big.Int)
 	}
 
 	// mine blocks if testing on regnet
-	var stop chan struct{}
+	var stop func()
 	isRegnet := chains.IsBitcoinRegnet(r.GetBitcoinChainID())
 	if isRegnet {
 		stop = r.MineBlocks()
@@ -119,7 +119,7 @@ func withdrawBTCZRC20(r *runner.E2ERunner, to btcutil.Address, amount *big.Int)
 
 	// stop mining
 	if isRegnet {
-		stop <- struct{}{}
+		stop()
 	}
 
 	return rawTx
diff --git a/e2e/e2etests/test_bitcoin_withdraw_invalid_address.go b/e2e/e2etests/test_bitcoin_withdraw_invalid_address.go
index 8d4698f489..a682aa5629 100644
--- a/e2e/e2etests/test_bitcoin_withdraw_invalid_address.go
+++ b/e2e/e2etests/test_bitcoin_withdraw_invalid_address.go
@@ -47,7 +47,7 @@ func withdrawToInvalidAddress(r *runner.E2ERunner, amount *big.Int) {
 	}
 
 	// mine blocks if testing on regnet
-	var stop chan struct{}
+	var stop func()
 	isRegnet := chains.IsBitcoinRegnet(r.GetBitcoinChainID())
 	if isRegnet {
 		stop = r.MineBlocks()
@@ -66,6 +66,6 @@ func withdrawToInvalidAddress(r *runner.E2ERunner, amount *big.Int) {
 
 	// stop mining
 	if isRegnet {
-		stop <- struct{}{}
+		stop()
 	}
 }
diff --git a/e2e/e2etests/test_crosschain_swap.go b/e2e/e2etests/test_crosschain_swap.go
index cb74056710..5d5cd18c62 100644
--- a/e2e/e2etests/test_crosschain_swap.go
+++ b/e2e/e2etests/test_crosschain_swap.go
@@ -116,7 +116,7 @@ func TestCrosschainSwap(r *runner.E2ERunner, _ []string) {
 	}
 
 	// mine blocks if testing on regnet
-	var stop chan struct{}
+	var stop func()
 	isRegnet := chains.IsBitcoinRegnet(r.GetBitcoinChainID())
 	if isRegnet {
 		stop = r.MineBlocks()
@@ -240,6 +240,6 @@ func TestCrosschainSwap(r *runner.E2ERunner, _ []string) {
 
 	// stop mining
 	if isRegnet {
-		stop <- struct{}{}
+		stop()
 	}
 }
diff --git a/e2e/runner/bitcoin.go b/e2e/runner/bitcoin.go
index 768c872743..4c5e15d298 100644
--- a/e2e/runner/bitcoin.go
+++ b/e2e/runner/bitcoin.go
@@ -366,12 +366,12 @@ func (runner *E2ERunner) GetBitcoinChainID() int64 {
 
 // MineBlocks mines blocks on the BTC chain at a rate of 1 blocks every 5 seconds
 // and returns a channel that can be used to stop the mining
-func (runner *E2ERunner) MineBlocks() chan struct{} {
-	stop := make(chan struct{})
+func (runner *E2ERunner) MineBlocks() func() {
+	stopChan := make(chan struct{})
 	go func() {
 		for {
 			select {
-			case <-stop:
+			case <-stopChan:
 				return
 			default:
 				_, err := runner.BtcRPCClient.GenerateToAddress(1, runner.BTCDeployerAddress, nil)
@@ -382,7 +382,10 @@ func (runner *E2ERunner) MineBlocks() chan struct{} {
 			}
 		}
 	}()
-	return stop
+
+	return func() {
+		close(stopChan)
+	}
 }
 
 // ProveBTCTransaction proves that a BTC transaction is in a block header and that the block header is in ZetaChain