diff --git a/src/PdfSharp/Pdf/PdfDictionary.cs b/src/PdfSharp/Pdf/PdfDictionary.cs
index 428140a1..aed19775 100644
--- a/src/PdfSharp/Pdf/PdfDictionary.cs
+++ b/src/PdfSharp/Pdf/PdfDictionary.cs
@@ -407,7 +407,10 @@ public int GetInteger(string key, bool create)
                 if (integerObject != null)
                     return integerObject.Value;
 
-                throw new InvalidCastException("GetInteger: Object is not an integer.");
+				PdfUInteger uinteger = obj as PdfUInteger;
+				if (uinteger != null)
+					return (int)uinteger.Value;
+				throw new InvalidCastException("GetInteger: Object is not an integer.");
             }
 
             /// <summary>