diff --git a/manifests/api.pp b/manifests/api.pp
index 265cf5cf..92acc7f6 100644
--- a/manifests/api.pp
+++ b/manifests/api.pp
@@ -388,7 +388,7 @@ class barbican::api (
   # enabled plugins when multiple plugins is enabled
   barbican_config {
     'secretstore/enable_multiple_secret_stores': value => $multiple_secret_stores_enabled;
-    'secretstore/stores_lookup_suffix':          value => $enabled_secret_stores;
+    'secretstore/stores_lookup_suffix':          value => join(any2array($enabled_secret_stores), ',');
   }
 
   # keystone config