diff --git a/mozilla/layout/xul/base/src/makefile.win b/mozilla/layout/xul/base/src/makefile.win
index a0d0bc5b35a..6808bdbb173 100644
--- a/mozilla/layout/xul/base/src/makefile.win
+++ b/mozilla/layout/xul/base/src/makefile.win
@@ -24,9 +24,7 @@ DEPTH=..\..\..\..
 LIBRARY_NAME=layoutxulbase_s 
 MODULE=layout_xul
 DIRS=outliner \
-!ifdef MOZ_GRID2
      grid
-!endif
 
 REQUIRES	= xpcom \
 		  string \
@@ -62,12 +60,6 @@ CPPSRCS=					\
         nsPopupBoxObject.cpp \
         nsMenuBoxObject.cpp \
         nsBoxObject.cpp \
-!ifndef MOZ_GRID2
-        nsGridLayout.cpp \
-        nsTempleLayout.cpp \
-        nsObeliskLayout.cpp \
-        nsMonumentLayout.cpp \
-!endif
         nsImageBoxFrame.cpp        \
         nsRootBoxFrame.cpp        \
         nsDocElementBoxFrame.cpp \
@@ -123,12 +115,6 @@ CPP_OBJS=					\
   .\$(OBJDIR)\nsPopupBoxObject.obj \
   .\$(OBJDIR)\nsMenuBoxObject.obj \
   .\$(OBJDIR)\nsBoxObject.obj \
-!ifndef MOZ_GRID2
-	.\$(OBJDIR)\nsGridLayout.obj		\
-	.\$(OBJDIR)\nsTempleLayout.obj		\
-	.\$(OBJDIR)\nsObeliskLayout.obj		\
-	.\$(OBJDIR)\nsMonumentLayout.obj		\
-!endif
 	.\$(OBJDIR)\nsImageBoxFrame.obj		\
 	.\$(OBJDIR)\nsRootBoxFrame.obj		\
   .\$(OBJDIR)\nsDocElementBoxFrame.obj \
diff --git a/mozilla/layout/xul/base/src/nsTreeLayout.h b/mozilla/layout/xul/base/src/nsTreeLayout.h
index e648bee5d74..c25cfed2361 100644
--- a/mozilla/layout/xul/base/src/nsTreeLayout.h
+++ b/mozilla/layout/xul/base/src/nsTreeLayout.h
@@ -45,7 +45,7 @@
 #ifndef nsTreeLayout_h___
 #define nsTreeLayout_h___
 
-//#define MOZ_GRID2 1
+#define MOZ_GRID2 1
 
 #ifdef MOZ_GRID2
   #include "nsGridRowGroupLayout.h"
diff --git a/mozilla/layout/xul/base/src/nsXULTreeCellFrame.cpp b/mozilla/layout/xul/base/src/nsXULTreeCellFrame.cpp
index 870d648e6cf..9ca257ecb42 100644
--- a/mozilla/layout/xul/base/src/nsXULTreeCellFrame.cpp
+++ b/mozilla/layout/xul/base/src/nsXULTreeCellFrame.cpp
@@ -47,7 +47,7 @@
 #include "nsIBoxLayout.h"
 #include "nsMonumentLayout.h"
 
-//#define MOZ_GRID2 1
+#define MOZ_GRID2 1
 
 #ifdef MOZ_GRID2
 #include "nsGrid.h"
diff --git a/mozilla/layout/xul/base/src/nsXULTreeOuterGroupFrame.cpp b/mozilla/layout/xul/base/src/nsXULTreeOuterGroupFrame.cpp
index 12b5a30f58e..fa9e53f711a 100644
--- a/mozilla/layout/xul/base/src/nsXULTreeOuterGroupFrame.cpp
+++ b/mozilla/layout/xul/base/src/nsXULTreeOuterGroupFrame.cpp
@@ -65,7 +65,7 @@
 #include "nsIStyleContext.h"
 #include "nsIDOMText.h"
 
-//#define MOZ_GRID2 1
+#define MOZ_GRID2 1
 
 #ifdef MOZ_GRID2
   #include "nsGridRowGroupLayout.h"