diff --git a/gfx/src/mac/nsFontMetricsMac.cpp b/gfx/src/mac/nsFontMetricsMac.cpp
index c8271d7e3708..3f963efd7117 100644
--- a/gfx/src/mac/nsFontMetricsMac.cpp
+++ b/gfx/src/mac/nsFontMetricsMac.cpp
@@ -120,7 +120,7 @@ nsUnicodeFontMappingMac* nsFontMetricsMac :: GetUnicodeFontMapping()
 	// we should pass the documentCharset from the nsIDocument level and
 	// the lang attribute from the tag level to here.
 	// XXX hard code to some value till peterl pass them down.
-	nsAutoString lang("de, zh_TW, ja, fr");
+	nsAutoString lang("");
 	nsAutoString documentCharset("ISO-8859-1");
 	if(! mFontMapping)
 		mFontMapping = nsUnicodeFontMappingMac::GetCachedInstance(mFont, mContext,documentCharset, lang);