diff --git a/src/org/olap4j/driver/xmla/XmlaOlap4jConnection.java b/src/org/olap4j/driver/xmla/XmlaOlap4jConnection.java
index 5bf3998..05a37a7 100644
--- a/src/org/olap4j/driver/xmla/XmlaOlap4jConnection.java
+++ b/src/org/olap4j/driver/xmla/XmlaOlap4jConnection.java
@@ -1143,7 +1143,7 @@ public void handle(Element row, Context context, List<XmlaOlap4jSchema> list) th
             list.add(
                 new XmlaOlap4jSchema(
                     context.getCatalog(row),
-                    schemaName));
+                    (schemaName == null) ? "" : schemaName));
         }
     }