diff --git a/ILSpy.BamlDecompiler/Ricciolo.StylesExplorer.MarkupReflection/XmlNamespace.cs b/ILSpy.BamlDecompiler/Ricciolo.StylesExplorer.MarkupReflection/XmlNamespace.cs
index 5094a9f39..a0bdae9e7 100644
--- a/ILSpy.BamlDecompiler/Ricciolo.StylesExplorer.MarkupReflection/XmlNamespace.cs
+++ b/ILSpy.BamlDecompiler/Ricciolo.StylesExplorer.MarkupReflection/XmlNamespace.cs
@@ -27,7 +27,15 @@ namespace Ricciolo.StylesExplorer.MarkupReflection
 
 		public override int GetHashCode()
 		{
-			return Prefix.GetHashCode() + Namespace.GetHashCode() >> 20;
+			int hashCode = 0;
+			unchecked
+			{
+				if (Namespace != null)
+					hashCode += 1000000007 * Namespace.GetHashCode();
+				if (Prefix != null)
+					hashCode += 1000000009 * Prefix.GetHashCode();
+			}
+			return hashCode;
 		}
 	}
 }
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