diff --git a/win_build/libboinc_2003.vcproj b/win_build/libboinc_2003.vcproj
index ec6b9c180a..b4c2fc2865 100644
--- a/win_build/libboinc_2003.vcproj
+++ b/win_build/libboinc_2003.vcproj
@@ -444,6 +444,9 @@
 			<File
 				RelativePath="..\lib\prefs.h">
 			</File>
+			<File
+				RelativePath="..\lib\procinfo.h">
+			</File>
 			<File
 				RelativePath="..\lib\proxy_info.h">
 			</File>