diff --git a/website/source/docs/providers/aws/r/elasticsearch_domain.html.markdown b/website/source/docs/providers/aws/r/elasticsearch_domain.html.markdown
index cf18732e7..050552795 100644
--- a/website/source/docs/providers/aws/r/elasticsearch_domain.html.markdown
+++ b/website/source/docs/providers/aws/r/elasticsearch_domain.html.markdown
@@ -20,7 +20,7 @@ resource "aws_elasticsearch_domain" "es" {
   }
 
   advanced_options {
-    "rest.action.multi.allow_explicit_index" = true
+    "rest.action.multi.allow_explicit_index" = "true"
   }
 
   access_policies = <<CONFIG