diff --git a/services/graphite/service_test.go b/services/graphite/service_test.go
index 2dc48aec09..ca3fe30eac 100644
--- a/services/graphite/service_test.go
+++ b/services/graphite/service_test.go
@@ -17,7 +17,9 @@ import (
 )
 
 func Test_Service_OpenClose(t *testing.T) {
-	c := Config{BindAddress: ":35422"}
+	// Let the OS assign a random port since we are only opening and closing the service,
+	// not actually connecting to it.
+	c := Config{BindAddress: "127.0.0.1:0"}
 	service := NewTestService(&c)
 
 	// Closing a closed service is fine.
diff --git a/services/opentsdb/service_test.go b/services/opentsdb/service_test.go
index 2fe8befd8d..a8234553dd 100644
--- a/services/opentsdb/service_test.go
+++ b/services/opentsdb/service_test.go
@@ -20,7 +20,9 @@ import (
 )
 
 func Test_Service_OpenClose(t *testing.T) {
-	service := NewTestService("db0", "127.0.0.1:45362")
+	// Let the OS assign a random port since we are only opening and closing the service,
+	// not actually connecting to it.
+	service := NewTestService("db0", "127.0.0.1:0")
 
 	// Closing a closed service is fine.
 	if err := service.Service.Close(); err != nil {