diff --git a/build/vc8/ixml.vcproj b/build/vc8/ixml.vcproj
index 7345d8f..39a370e 100644
--- a/build/vc8/ixml.vcproj
+++ b/build/vc8/ixml.vcproj
@@ -39,7 +39,7 @@
 			<Tool
 				Name="VCCLCompilerTool"
 				Optimization="0"
-				AdditionalIncludeDirectories="..\..\ixml\inc;..\..\ixml\src\inc;..\inc"
+				AdditionalIncludeDirectories="..\..\ixml\inc;..\..\ixml\src\inc;..\inc;..\..\upnp\inc"
 				PreprocessorDefinitions="WIN32;DEBUG"
 				MinimalRebuild="true"
 				BasicRuntimeChecks="3"