From 2b581949f7b677b70c657dd69a905970e94662d4 Mon Sep 17 00:00:00 2001
From: Fake Bob Dobbs <swinz@grtmail.com>
Date: Sun, 8 Mar 2020 10:42:24 -0400
Subject: [PATCH] Avoid creating default state machine role when an external
 role is set

---
 aws/step/step.go | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/aws/step/step.go b/aws/step/step.go
index 11ecb89f9..82bfe9361 100644
--- a/aws/step/step.go
+++ b/aws/step/step.go
@@ -919,7 +919,7 @@ func (sm *StateMachine) StateMachineNamedDecorator(stepFunctionResourceName stri
 			},
 		}
 		var iamRoleResourceName string
-		if len(lambdaFunctionResourceNames) != 0 {
+		if len(lambdaFunctionResourceNames) != 0 && sm.roleArn == nil {
 			statesIAMRole := &gocf.IAMRole{
 				AssumeRolePolicyDocument: AssumePolicyDocument,
 			}