diff --git a/gfx/src/motif/nsFontMetricsUnix.cpp b/gfx/src/motif/nsFontMetricsUnix.cpp
index 3db54a0edaf7..d622a26adb37 100644
--- a/gfx/src/motif/nsFontMetricsUnix.cpp
+++ b/gfx/src/motif/nsFontMetricsUnix.cpp
@@ -16,6 +16,7 @@
  * Reserved.
  */
 
+#include "xp_core.h"			//this is a hack to get it to build. MMP
 #include "nsFontMetricsUnix.h"
 #include "nsDeviceContextUnix.h"
 
diff --git a/gfx/src/motif/nsGfxFactoryUnix.cpp b/gfx/src/motif/nsGfxFactoryUnix.cpp
index 74f2ee752e27..adbcc27fdfc1 100644
--- a/gfx/src/motif/nsGfxFactoryUnix.cpp
+++ b/gfx/src/motif/nsGfxFactoryUnix.cpp
@@ -16,6 +16,7 @@
  * Reserved.
  */
 
+#include "xp_core.h"			//this is a hack to get it to build. MMP
 #include "nscore.h"
 #include "nsIFactory.h"
 #include "nsISupports.h"
diff --git a/gfx/src/motif/nsImageUnix.cpp b/gfx/src/motif/nsImageUnix.cpp
index f92329d73098..66d37258eb63 100644
--- a/gfx/src/motif/nsImageUnix.cpp
+++ b/gfx/src/motif/nsImageUnix.cpp
@@ -15,6 +15,8 @@
  * Copyright (C) 1998 Netscape Communications Corporation.  All Rights
  * Reserved.
  */
+
+#include "xp_core.h"			//this is a hack to get it to build. MMP
 #include "nsImageUnix.h"
 #include "nsRenderingContextUnix.h"
 #include "nsDeviceContextUnix.h"
diff --git a/gfx/src/motif/nsRenderingContextUnix.cpp b/gfx/src/motif/nsRenderingContextUnix.cpp
index 2b674d40d6e8..298f486c3a7a 100644
--- a/gfx/src/motif/nsRenderingContextUnix.cpp
+++ b/gfx/src/motif/nsRenderingContextUnix.cpp
@@ -16,6 +16,8 @@
  * Reserved.
  */
 
+
+#include "xp_core.h"			//this is a hack to get it to build. MMP
 #include "nsRenderingContextUnix.h"
 #include "nsDeviceContextUnix.h"