diff --git a/PCbuild/pythoncore.vcproj b/PCbuild/pythoncore.vcproj
index dc2683a09ae..5d5dbb9e477 100644
--- a/PCbuild/pythoncore.vcproj
+++ b/PCbuild/pythoncore.vcproj
@@ -992,6 +992,9 @@
 					PreprocessorDefinitions="_DEBUG;USE_DL_EXPORT;WIN32;_WINDOWS;$(NoInherit)"/>
 			</FileConfiguration>
 		</File>
+		<File
+			RelativePath="..\Objects\genobject.c">
+		</File>
 		<File
 			RelativePath="..\Python\getargs.c">
 			<FileConfiguration