diff --git a/lnd_test.go b/lnd_test.go
index a9612666..f60f4cda 100644
--- a/lnd_test.go
+++ b/lnd_test.go
@@ -8887,7 +8887,7 @@ func testAsyncPayments(net *lntest.NetworkHarness, t *harnessTest) {
 	// Open up a payment stream to Alice that we'll use to send payment to
 	// Bob. We also create a small helper function to send payments to Bob,
 	// consuming the payment hashes we generated above.
-	ctxt, _ = context.WithTimeout(ctxb, time.Minute)
+	ctxt, _ = context.WithTimeout(ctxb, lntest.AsyncBenchmarkTimeout)
 	alicePayStream, err := net.Alice.SendPayment(ctxt)
 	if err != nil {
 		t.Fatalf("unable to create payment stream for alice: %v", err)
diff --git a/lntest/harness.go b/lntest/harness.go
index 78644c7d..6f3351de 100644
--- a/lntest/harness.go
+++ b/lntest/harness.go
@@ -24,27 +24,8 @@ import (
 	"github.com/lightningnetwork/lnd/lnwire"
 )
 
-const (
-	// DefaultCSV is the CSV delay (remotedelay) we will start our test
-	// nodes with.
-	DefaultCSV = 4
-
-	// MinerMempoolTimeout is the max time we will wait for a transaction
-	// to propagate to the mining node's mempool.
-	MinerMempoolTimeout = time.Second * 30
-
-	// ChannelOpenTimeout is the max time we will wait before a channel to
-	// be considered opened.
-	ChannelOpenTimeout = time.Second * 30
-
-	// ChannelCloseTimeout is the max time we will wait before a channel is
-	// considered closed.
-	ChannelCloseTimeout = time.Second * 30
-
-	// DefaultTimeout is a timeout that will be used for various wait
-	// scenarios where no custom timeout value is defined.
-	DefaultTimeout = time.Second * 30
-)
+// DefaultCSV is the CSV delay (remotedelay) we will start our test nodes with.
+const DefaultCSV = 4
 
 // NetworkHarness is an integration testing harness for the lightning network.
 // The harness by default is created with two active nodes on the network:
diff --git a/lntest/timeouts.go b/lntest/timeouts.go
new file mode 100644
index 00000000..05213846
--- /dev/null
+++ b/lntest/timeouts.go
@@ -0,0 +1,27 @@
+// +build !darwin
+
+package lntest
+
+import "time"
+
+const (
+	// MinerMempoolTimeout is the max time we will wait for a transaction
+	// to propagate to the mining node's mempool.
+	MinerMempoolTimeout = time.Second * 30
+
+	// ChannelOpenTimeout is the max time we will wait before a channel to
+	// be considered opened.
+	ChannelOpenTimeout = time.Second * 30
+
+	// ChannelCloseTimeout is the max time we will wait before a channel is
+	// considered closed.
+	ChannelCloseTimeout = time.Second * 30
+
+	// DefaultTimeout is a timeout that will be used for various wait
+	// scenarios where no custom timeout value is defined.
+	DefaultTimeout = time.Second * 30
+
+	// AsyncBenchmarkTimeout is the timeout used when running the async
+	// payments benchmark.
+	AsyncBenchmarkTimeout = time.Minute
+)
diff --git a/lntest/timeouts_darwin.go b/lntest/timeouts_darwin.go
new file mode 100644
index 00000000..ef21c998
--- /dev/null
+++ b/lntest/timeouts_darwin.go
@@ -0,0 +1,28 @@
+// +build darwin
+
+package lntest
+
+import "time"
+
+const (
+	// MinerMempoolTimeout is the max time we will wait for a transaction
+	// to propagate to the mining node's mempool.
+	MinerMempoolTimeout = time.Second * 30
+
+	// ChannelOpenTimeout is the max time we will wait before a channel to
+	// be considered opened.
+	ChannelOpenTimeout = time.Second * 30
+
+	// ChannelCloseTimeout is the max time we will wait before a channel is
+	// considered closed.
+	ChannelCloseTimeout = time.Second * 30
+
+	// DefaultTimeout is a timeout that will be used for various wait
+	// scenarios where no custom timeout value is defined.
+	DefaultTimeout = time.Second * 30
+
+	// AsyncBenchmarkTimeout is the timeout used when running the async
+	// payments benchmark. This timeout takes considerably longer on darwin
+	// after go1.12 corrected its use of fsync.
+	AsyncBenchmarkTimeout = time.Minute * 3
+)