diff --git a/PC/VC6/pythoncore.dsp b/PC/VC6/pythoncore.dsp
index 8576f7e1fcd..ee7e36628c6 100644
--- a/PC/VC6/pythoncore.dsp
+++ b/PC/VC6/pythoncore.dsp
@@ -277,10 +277,6 @@ SOURCE=..\..\Modules\cmathmodule.c
 # End Source File
 # Begin Source File
 
-SOURCE=..\..\Objects\cobject.c
-# End Source File
-# Begin Source File
-
 SOURCE=..\..\Python\codecs.c
 # End Source File
 # Begin Source File
diff --git a/PC/VS7.1/pythoncore.vcproj b/PC/VS7.1/pythoncore.vcproj
index b5ee947da9e..214a690c998 100644
--- a/PC/VS7.1/pythoncore.vcproj
+++ b/PC/VS7.1/pythoncore.vcproj
@@ -486,9 +486,6 @@
 		<File
 			RelativePath="..\..\Modules\cmathmodule.c">
 		</File>
-		<File
-			RelativePath="..\..\Objects\cobject.c">
-		</File>
 		<File
 			RelativePath="..\..\Python\codecs.c">
 		</File>
diff --git a/PC/VS8.0/pythoncore.vcproj b/PC/VS8.0/pythoncore.vcproj
index 0393f31a181..726e6301cad 100644
--- a/PC/VS8.0/pythoncore.vcproj
+++ b/PC/VS8.0/pythoncore.vcproj
@@ -674,10 +674,6 @@
 				RelativePath="..\..\Include\classobject.h"
 				>
 			</File>
-			<File
-				RelativePath="..\..\Include\cobject.h"
-				>
-			</File>
 			<File
 				RelativePath="..\..\Include\code.h"
 				>
@@ -1382,10 +1378,6 @@
 				RelativePath="..\..\Objects\classobject.c"
 				>
 			</File>
-			<File
-				RelativePath="..\..\Objects\cobject.c"
-				>
-			</File>
 			<File
 				RelativePath="..\..\Objects\codeobject.c"
 				>
diff --git a/PCbuild/pythoncore.vcproj b/PCbuild/pythoncore.vcproj
index 05cffd727af..650d244b2f9 100644
--- a/PCbuild/pythoncore.vcproj
+++ b/PCbuild/pythoncore.vcproj
@@ -674,10 +674,6 @@
 				RelativePath="..\Include\classobject.h"
 				>
 			</File>
-			<File
-				RelativePath="..\Include\cobject.h"
-				>
-			</File>
 			<File
 				RelativePath="..\Include\code.h"
 				>
@@ -1387,10 +1383,6 @@
 				RelativePath="..\Objects\classobject.c"
 				>
 			</File>
-			<File
-				RelativePath="..\Objects\cobject.c"
-				>
-			</File>
 			<File
 				RelativePath="..\Objects\codeobject.c"
 				>