diff --git a/Assets/Scripts/Layers/Adapters/DataTypeAdapters/WFSGeoJSONImportAdapter.cs b/Assets/Scripts/Layers/Adapters/DataTypeAdapters/WFSGeoJSONImportAdapter.cs
index cbce7902..ee40c71f 100644
--- a/Assets/Scripts/Layers/Adapters/DataTypeAdapters/WFSGeoJSONImportAdapter.cs
+++ b/Assets/Scripts/Layers/Adapters/DataTypeAdapters/WFSGeoJSONImportAdapter.cs
@@ -358,8 +358,14 @@ private XmlNamespaceManager ReadNameSpaceManager(XmlDocument xmlDocument)
             {
                 XmlNamespaceManager namespaceManager = new(xmlDocument.NameTable);
                 XmlNodeList elementsWithNamespaces = xmlDocument.SelectNodes("//*");
-                namespaceManager.AddNamespace("wfs", "http://www.opengis.net/wfs");
-                namespaceManager.AddNamespace("ows", "http://www.opengis.net/ows");
+                if (namespaceManager.HasNamespace("wfs") == false)
+                {
+                    namespaceManager.AddNamespace("wfs", "http://www.opengis.net/wfs");
+                }
+                if (namespaceManager.HasNamespace("ows") == false)
+                {
+                    namespaceManager.AddNamespace("ows", "http://www.opengis.net/ows/1.1");
+                }
 
                 if (elementsWithNamespaces != null)
                 {