diff --git a/PC/vc5x/_tkinter.dsp b/PC/vc5x/_tkinter.dsp
index b0e5193f213..fb748f05926 100644
--- a/PC/vc5x/_tkinter.dsp
+++ b/PC/vc5x/_tkinter.dsp
@@ -43,7 +43,7 @@ RSC=rc.exe
 # PROP Ignore_Export_Lib 0
 # PROP Target_Dir ""
 # ADD BASE CPP /nologo /MT /W3 /GX /O2 /D "WIN32" /D "NDEBUG" /D "_WINDOWS" /YX /FD /c
-# ADD CPP /nologo /MD /W3 /GX /O2 /I "..\Include" /I "..\PC" /I "C:\Program Files\Tcl\include" /D "WIN32" /D "NDEBUG" /D "_WINDOWS" /YX /FD /c
+# ADD CPP /nologo /MD /W3 /GX /O2 /I "..\Include" /I "..\PC" /I "C:\Program Files\Tcl\include" /D "NDEBUG" /D "WIN32" /D "_WINDOWS" /D "WITH_APPINIT" /YX /FD /c
 # ADD BASE MTL /nologo /D "NDEBUG" /mktyplib203 /o NUL /win32
 # ADD MTL /nologo /D "NDEBUG" /mktyplib203 /o NUL /win32
 # ADD BASE RSC /l 0x409 /d "NDEBUG"
@@ -70,7 +70,7 @@ LINK32=link.exe
 # PROP Ignore_Export_Lib 0
 # PROP Target_Dir ""
 # ADD BASE CPP /nologo /MTd /W3 /Gm /GX /Zi /Od /D "WIN32" /D "_DEBUG" /D "_WINDOWS" /YX /FD /c
-# ADD CPP /nologo /MDd /W3 /Gm /GX /Zi /Od /I "..\Include" /I "..\PC" /I "C:\Program Files\Tcl\include" /D "WIN32" /D "_DEBUG" /D "_WINDOWS" /YX /FD /c
+# ADD CPP /nologo /MDd /W3 /Gm /GX /Zi /Od /I "..\Include" /I "..\PC" /I "C:\Program Files\Tcl\include" /D "_DEBUG" /D "WIN32" /D "_WINDOWS" /D "WITH_APPINIT" /YX /FD /c
 # ADD BASE MTL /nologo /D "_DEBUG" /mktyplib203 /o NUL /win32
 # ADD MTL /nologo /D "_DEBUG" /mktyplib203 /o NUL /win32
 # ADD BASE RSC /l 0x409 /d "_DEBUG"
@@ -101,5 +101,9 @@ SOURCE="..\..\..\..\..\Program Files\Tcl\lib\tcl80vc.lib"
 
 SOURCE="..\..\..\..\..\Program Files\Tcl\lib\tk80vc.lib"
 # End Source File
+# Begin Source File
+
+SOURCE=..\Modules\tkappinit.c
+# End Source File
 # End Target
 # End Project