diff --git a/ClosedXML/Excel/XLWorkbook_Load.cs b/ClosedXML/Excel/XLWorkbook_Load.cs
index 44d678a..307f878 100644
--- a/ClosedXML/Excel/XLWorkbook_Load.cs
+++ b/ClosedXML/Excel/XLWorkbook_Load.cs
@@ -78,7 +78,11 @@
             {
                 foreach (var m in dSpreadsheet.CustomFilePropertiesPart.Properties.Elements<CustomDocumentProperty>())
                 {
-                    String name = m.Name.Value;
+                    String name = m.Name?.Value;
+
+                    if (string.IsNullOrWhiteSpace(name))
+                        continue;
+
                     if (m.VTLPWSTR != null)
                         CustomProperties.Add(name, m.VTLPWSTR.Text);
                     else if (m.VTFileTime != null)