diff --git a/server/environment_docker.go b/server/environment_docker.go
index e9a6128..ae99f7f 100644
--- a/server/environment_docker.go
+++ b/server/environment_docker.go
@@ -223,7 +223,7 @@ func (d *DockerEnvironment) Terminate(signal os.Signal) error {
 	d.Server.SetState(ProcessStoppingState)
 
 	return d.Client.ContainerKill(
-		ctx, d.Server.Uuid, strings.TrimPrefix("signal ", signal.String()),
+		ctx, d.Server.Uuid, strings.TrimSuffix(strings.TrimPrefix(signal.String(), "signal "), "ed"),
 	)
 }