diff --git a/gfx/src/motif/nsFontMetricsMotif.cpp b/gfx/src/motif/nsFontMetricsMotif.cpp
index 01df512d438..e039bd167a8 100644
--- a/gfx/src/motif/nsFontMetricsMotif.cpp
+++ b/gfx/src/motif/nsFontMetricsMotif.cpp
@@ -53,7 +53,7 @@ nsFontMetricsMotif :: ~nsFontMetricsMotif()
 
 NS_IMPL_ISUPPORTS(nsFontMetricsMotif, kIFontMetricsIID)
 
-NS_IMETHODIMP nsFontMetricsMotif :: Init(const nsFont& aFont, nsIDeviceContext* aCX)
+NS_IMETHODIMP nsFontMetricsMotif :: Init(const nsFont& aFont, nsIAtom* aLangGroup, nsIDeviceContext* aContext)
 {
   NS_ASSERTION(!(nsnull == aCX), "attempt to init fontmetrics with null device context");
 
@@ -80,7 +80,8 @@ NS_IMETHODIMP nsFontMetricsMotif :: Init(const nsFont& aFont, nsIDeviceContext*
   mFont = new nsFont(aFont);
   mContext = aCX;
   mFontHandle = nsnull;
-
+  mLangGroup = aLangGroup;
+  
   firstFace.ToCString(wildstring, namelen);
 
   if (abs(dpi - 75) < abs(dpi - 100))
@@ -345,6 +346,17 @@ NS_IMETHODIMP nsFontMetricsMotif :: GetFontHandle(nsFontHandle &aHandle)
   return NS_OK;
 }
 
+NS_IMETHODIMP nsFontMetricsMotif :: GetLangGroup(nsIAtom** aLangGroup)
+{
+  if (!aLangGroup) {
+    return NS_ERROR_NULL_POINTER;
+  }
+
+  *aLangGroup = mLangGroup;
+  NS_IF_ADDREF(*aLangGroup);
+
+  return NS_OK;
+}
 
 static void MapGenericFamilyToFont(const nsString& aGenericFamily, nsIDeviceContext* aDC,
                                    nsString& aFontFace)
diff --git a/gfx/src/motif/nsFontMetricsMotif.h b/gfx/src/motif/nsFontMetricsMotif.h
index 414eba6d93b..cf4caea2148 100644
--- a/gfx/src/motif/nsFontMetricsMotif.h
+++ b/gfx/src/motif/nsFontMetricsMotif.h
@@ -42,7 +42,8 @@ public:
 
   NS_DECL_ISUPPORTS
 
-  NS_IMETHOD  Init(const nsFont& aFont, nsIDeviceContext* aContext);
+  NS_IMETHOD  Init(const nsFont& aFont, nsIAtom* aLangGroup,
+                   nsIDeviceContext* aContext);
   NS_IMETHOD  Destroy();
 
   NS_IMETHOD  GetXHeight(nscoord& aResult);
@@ -59,6 +60,7 @@ public:
 
   NS_IMETHOD  GetFont(const nsFont*& aFont);
   NS_IMETHOD  GetFontHandle(nsFontHandle &aHandle);
+  NS_IMETHOD  GetLangGroup(nsIAtom** aLangGroup);
 
 protected:
   void RealizeFont();
@@ -69,6 +71,7 @@ protected:
 
   nsFont            *mFont;
   nsIDeviceContext  *mContext;
+  nsCOMPtr<nsIAtom> mLangGroup;
   XFontStruct       *mFontInfo;
   Font              mFontHandle;
   nscoord           mCharWidths[256];