diff --git a/splunk/resource_splunk_inputs_http_event_collector.go b/splunk/resource_splunk_inputs_http_event_collector.go
index 90d2ddf3..7dc6e9ef 100644
--- a/splunk/resource_splunk_inputs_http_event_collector.go
+++ b/splunk/resource_splunk_inputs_http_event_collector.go
@@ -33,7 +33,7 @@ func inputsHttpEventCollector() *schema.Resource {
 				Description: "Index to store generated events",
 			},
 			"indexes": {
-				Type:        schema.TypeList,
+				Type:        schema.TypeSet,
 				Optional:    true,
 				Computed:    true,
 				Elem:        &schema.Schema{Type: schema.TypeString},