diff --git a/src/Make_ivc.mak b/src/Make_ivc.mak
index 02910bc..0691e8d 100644
--- a/src/Make_ivc.mak
+++ b/src/Make_ivc.mak
@@ -92,8 +92,8 @@
 # ADD LINK32  oldnames.lib kernel32.lib user32.lib gdi32.lib version.lib comdlg32.lib comctl32.lib advapi32.lib shell32.lib ole32.lib uuid.lib /nologo /machine:I386 /nodefaultlib
 # SUBTRACT LINK32 /incremental:yes
 
-RSC_PROJ= /l 0x409 /d "FEAT_GUI"
-# ADD RSC /l 0x409 /d "FEAT_GUI"
+RSC_PROJ= /l 0x409 /d "FEAT_GUI_MSWIN"
+# ADD RSC /l 0x409 /d "FEAT_GUI_MSWIN"
 
 !IF  "$(CFG)" == "Vim - Win32 Release gvim OLE"
 
@@ -105,8 +105,8 @@
 VIM=gvim
 EXTRAS="$(INTDIR)/if_ole.obj" "$(INTDIR)/vim.res" "$(INTDIR)/gui.obj" "$(INTDIR)/gui_w32.obj" "$(INTDIR)/gui_beval.obj" "$(INTDIR)/os_w32exe.obj"
 
-CPP_PROJ=$(CPP_PROJ) /Zi /O2 /D "NDEBUG" /D "FEAT_GUI" /D "DYNAMIC_GETTEXT" /D "FEAT_OLE" /Fd.\oleRel/ /Fo.\oleRel/
-# ADD CPP            /Zi /O2 /D "NDEBUG" /D "FEAT_GUI" /D "DYNAMIC_GETTEXT" /D "FEAT_OLE" /Fd.\oleRel/ /Fo.\oleRel/
+CPP_PROJ=$(CPP_PROJ) /Zi /O2 /D "NDEBUG" /D "FEAT_GUI_MSWIN" /D "DYNAMIC_GETTEXT" /D "FEAT_OLE" /Fd.\oleRel/ /Fo.\oleRel/
+# ADD CPP            /Zi /O2 /D "NDEBUG" /D "FEAT_GUI_MSWIN" /D "DYNAMIC_GETTEXT" /D "FEAT_OLE" /Fd.\oleRel/ /Fo.\oleRel/
 
 RSC_PROJ=$(RSC_PROJ) /I ".\oleRel" /d "NDEBUG" /d "FEAT_OLE" /fo.\oleRel\vim.res
 # ADD RSC            /I ".\oleRel" /d "NDEBUG" /d "FEAT_OLE" /fo.\oleRel\vim.res
@@ -124,8 +124,8 @@
 VIM=gvimd
 EXTRAS="$(INTDIR)/if_ole.obj" "$(INTDIR)/vim.res" "$(INTDIR)/gui.obj" "$(INTDIR)/gui_w32.obj" "$(INTDIR)/gui_beval.obj" "$(INTDIR)/os_w32exe.obj"
 
-CPP_PROJ=$(CPP_PROJ) /Zi /Od /D "_DEBUG" /D "FEAT_GUI" /D "DYNAMIC_GETTEXT" /D "FEAT_OLE" /Fd.\oleDbg/ /Fo.\oleDbg/
-# ADD CPP            /Zi /Od /D "_DEBUG" /D "FEAT_GUI" /D "DYNAMIC_GETTEXT" /D "FEAT_OLE" /Fd.\oleDbg/ /Fo.\oleDbg/
+CPP_PROJ=$(CPP_PROJ) /Zi /Od /D "_DEBUG" /D "FEAT_GUI_MSWIN" /D "DYNAMIC_GETTEXT" /D "FEAT_OLE" /Fd.\oleDbg/ /Fo.\oleDbg/
+# ADD CPP            /Zi /Od /D "_DEBUG" /D "FEAT_GUI_MSWIN" /D "DYNAMIC_GETTEXT" /D "FEAT_OLE" /Fd.\oleDbg/ /Fo.\oleDbg/
 
 RSC_PROJ=$(RSC_PROJ) /I .\oleDbg /d "_DEBUG" /d "FEAT_OLE" /fo.\oleDbg\vim.res
 # ADD RSC            /I .\oleDbg /d "_DEBUG" /d "FEAT_OLE" /fo.\oleDbg\vim.res
@@ -144,8 +144,8 @@
 VIM=gvim
 EXTRAS="$(INTDIR)/vim.res" "$(INTDIR)/gui.obj" "$(INTDIR)/gui_w32.obj" "$(INTDIR)/gui_beval.obj" "$(INTDIR)/os_w32exe.obj"
 
-CPP_PROJ=$(CPP_PROJ) /Zi /O2 /D "NDEBUG" /D "FEAT_GUI" /Fd.\gRel/ /Fo.\gRel/
-# ADD CPP            /Zi /O2 /D "NDEBUG" /D "FEAT_GUI" /Fd.\gRel/ /Fo.\gRel/
+CPP_PROJ=$(CPP_PROJ) /Zi /O2 /D "NDEBUG" /D "FEAT_GUI_MSWIN" /Fd.\gRel/ /Fo.\gRel/
+# ADD CPP            /Zi /O2 /D "NDEBUG" /D "FEAT_GUI_MSWIN" /Fd.\gRel/ /Fo.\gRel/
 
 RSC_PROJ=$(RSC_PROJ) /d "NDEBUG" /fo.\gRel\vim.res
 # ADD RSC            /d "NDEBUG" /fo.\gRel\vim.res
@@ -163,8 +163,8 @@
 VIM=gvimd
 EXTRAS="$(INTDIR)/vim.res" "$(INTDIR)/gui.obj" "$(INTDIR)/gui_w32.obj" "$(INTDIR)/gui_beval.obj" "$(INTDIR)/os_w32exe.obj"
 
-CPP_PROJ=$(CPP_PROJ) /Zi /Od /D "_DEBUG" /D "FEAT_GUI" /Fd.\gDbg/ /Fo.\gDbg/
-# ADD CPP            /Zi /Od /D "_DEBUG" /D "FEAT_GUI" /Fd.\gDbg/ /Fo.\gDbg/
+CPP_PROJ=$(CPP_PROJ) /Zi /Od /D "_DEBUG" /D "FEAT_GUI_MSWIN" /Fd.\gDbg/ /Fo.\gDbg/
+# ADD CPP            /Zi /Od /D "_DEBUG" /D "FEAT_GUI_MSWIN" /Fd.\gDbg/ /Fo.\gDbg/
 
 RSC_PROJ=$(RSC_PROJ) /d "_DEBUG" /fo.\gDbg\vim.res
 # ADD RSC            /d "_DEBUG" /fo.\gDbg\vim.res
@@ -508,7 +508,7 @@
 # Begin Custom Build
 
 "$(INTDIR)\if_ole.obj" : $(SOURCE) "$(INTDIR)" "$(INTDIR)\if_ole.h"
- cl.exe /nologo /MT /W3 /GX /I ".\proto" /D "WIN32" /c /Zi /O2 /D "NDEBUG" /D "FEAT_GUI" /D "FEAT_OLE" /Fd.\oleRel/ /Fo.\oleRel/ /I ".\oleRel" .\if_ole.cpp
+ cl.exe /nologo /MT /W3 /GX /I ".\proto" /D "WIN32" /c /Zi /O2 /D "NDEBUG" /D "FEAT_GUI_MSWIN" /D "FEAT_OLE" /Fd.\oleRel/ /Fo.\oleRel/ /I ".\oleRel" .\if_ole.cpp
  @rem This is the default rule with /I "$(IntDir)" added
 
 # End Custom Build
@@ -519,7 +519,7 @@
 # Begin Custom Build
 
 "$(INTDIR)\if_ole.obj" : $(SOURCE) "$(INTDIR)" "$(INTDIR)\if_ole.h"
- cl.exe /nologo /MT /W3 /GX /I ".\proto" /D "WIN32" /c /Zi /Od /D "_DEBUG" /D "FEAT_GUI" /D "FEAT_OLE" /Fd.\oleDbg/ /Fo.\oleDbg/ /I ".\oleDbg" .\if_ole.cpp
+ cl.exe /nologo /MT /W3 /GX /I ".\proto" /D "WIN32" /c /Zi /Od /D "_DEBUG" /D "FEAT_GUI_MSWIN" /D "FEAT_OLE" /Fd.\oleDbg/ /Fo.\oleDbg/ /I ".\oleDbg" .\if_ole.cpp
  @rem This is the default rule with /I "$(IntDir)" added
 
 # End Custom Build