diff --git a/components/engine/integration-cli/docker_api_swarm_test.go b/components/engine/integration-cli/docker_api_swarm_test.go
index 9be5719c52..2260f2cff1 100644
--- a/components/engine/integration-cli/docker_api_swarm_test.go
+++ b/components/engine/integration-cli/docker_api_swarm_test.go
@@ -507,7 +507,8 @@ func (s *DockerSwarmSuite) TestAPISwarmManagerRestore(c *check.C) {
 	d3.Start(c)
 	d3.GetService(c, id)
 
-	d3.Kill()
+	err := d3.Kill()
+	assert.NilError(c, err)
 	time.Sleep(1 * time.Second) // time to handle signal
 	d3.Start(c)
 	d3.GetService(c, id)