diff --git a/modules/playful-web/main.tf b/modules/playful-web/main.tf
index 1c4c292..09bb5fb 100644
--- a/modules/playful-web/main.tf
+++ b/modules/playful-web/main.tf
@@ -77,11 +77,24 @@ resource "fastly_service_vcl" "cdn" {
       ignore_if_set = false
       name          = "Pass header to enable discoverability in prod"
       priority      = 100
-      source        = "true"
+      source        = "\"true\""
       type          = "request"
     }
   }
 
+  dynamic "header" {
+    for_each = var.noindex ? [] : [1]
+    content {
+      action        = "set"
+      destination   = "http.Playful-Enable-Discoverability"
+      ignore_if_set = false
+      name          = "Pass header to enable discoverability in prod"
+      priority      = 100
+      source        = "\"true\""
+      type          = "cache"
+    }
+  }
+
   header {
     action        = "set"
     destination   = "http.Strict-Transport-Security"