diff --git a/builtin/providers/aws/resource_aws_ecs_service.go b/builtin/providers/aws/resource_aws_ecs_service.go
index eee8ddf06..9874effd5 100644
--- a/builtin/providers/aws/resource_aws_ecs_service.go
+++ b/builtin/providers/aws/resource_aws_ecs_service.go
@@ -511,21 +511,14 @@ func resourceAwsEcsLoadBalancerHash(v interface{}) int {
 	var buf bytes.Buffer
 	m := v.(map[string]interface{})
 
-	// There are 2 types of load balancers: ELB/ALB
-	// In case of ELB `elb_name` is expected and for ALB `target_group_arn` is.
-	optionalLoadBalancerParams := []string{"target_group_arn", "elb_name"}
-
-	for i := range optionalLoadBalancerParams {
-		paramName := optionalLoadBalancerParams[i]
-
-		if m[paramName] != nil {
-			buf.WriteString(fmt.Sprintf("%s-", m[paramName].(string)))
-		}
-	}
-
+	buf.WriteString(fmt.Sprintf("%s-", m["elb_name"].(string)))
 	buf.WriteString(fmt.Sprintf("%s-", m["container_name"].(string)))
 	buf.WriteString(fmt.Sprintf("%d-", m["container_port"].(int)))
 
+	if s := m["target_group_arn"].(string); s != "" {
+		buf.WriteString(fmt.Sprintf("%s-", s))
+	}
+
 	return hashcode.String(buf.String())
 }