diff --git a/PCbuild/python15.dsp b/PCbuild/python15.dsp
index 6716a999eba..1ae4538115e 100644
--- a/PCbuild/python15.dsp
+++ b/PCbuild/python15.dsp
@@ -42,6 +42,7 @@ RSC=rc.exe
 # PROP Intermediate_Dir "temp-release"
 # PROP Ignore_Export_Lib 0
 # PROP Target_Dir ""
+F90=df.exe
 # ADD BASE CPP /nologo /MT /W3 /GX /O2 /D "WIN32" /D "NDEBUG" /D "_WINDOWS" /YX /FD /c
 # ADD CPP /nologo /MD /W3 /GX /Zi /O2 /I "..\Include" /I "..\PC" /D "NDEBUG" /D "WIN32" /D "_WINDOWS" /D "USE_DL_EXPORT" /YX /FD /c
 # ADD BASE MTL /nologo /D "NDEBUG" /mktyplib203 /o NUL /win32
@@ -68,6 +69,7 @@ LINK32=link.exe
 # PROP Intermediate_Dir "temp-debug"
 # PROP Ignore_Export_Lib 0
 # PROP Target_Dir ""
+F90=df.exe
 # 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" /D "_DEBUG" /D "USE_DL_EXPORT" /D "WIN32" /D "_WINDOWS" /YX /FD /c
 # ADD BASE MTL /nologo /D "_DEBUG" /mktyplib203 /o NUL /win32
@@ -122,6 +124,10 @@ SOURCE=..\Python\bltinmodule.c
 # End Source File
 # Begin Source File
 
+SOURCE=..\Objects\bufferobject.c
+# End Source File
+# Begin Source File
+
 SOURCE=..\Python\ceval.c
 # End Source File
 # Begin Source File