Add config.hw file to project file.
diff --git a/srtp.vcproj b/srtp.vcproj
index 1f5c47f..2d21cd3 100644
--- a/srtp.vcproj
+++ b/srtp.vcproj
@@ -587,6 +587,10 @@
 			>
 		</Filter>
 		<File
+			RelativePath=".\config.hw"
+			>
+		</File>
+		<File
 			RelativePath=".\srtp.def"
 			>
 		</File>