diff --git a/ice-rest-catalog/src/main/java/com/altinity/ice/rest/catalog/internal/rest/RESTCatalogAdapter.java b/ice-rest-catalog/src/main/java/com/altinity/ice/rest/catalog/internal/rest/RESTCatalogAdapter.java
index bd691215..5c782a58 100644
--- a/ice-rest-catalog/src/main/java/com/altinity/ice/rest/catalog/internal/rest/RESTCatalogAdapter.java
+++ b/ice-rest-catalog/src/main/java/com/altinity/ice/rest/catalog/internal/rest/RESTCatalogAdapter.java
@@ -115,6 +115,9 @@ public <T extends RESTResponse> T handle(
           String pageSize = PropertyUtil.propertyAsString(vars, "pageSize", null);
 
           if (pageSize != null) {
+            if (pageToken == null) {
+              pageToken = "";
+            }
             return castResponse(
                 responseType,
                 CatalogHandlers.listNamespaces(asNamespaceCatalog, ns, pageToken, pageSize));