diff --git a/embedding/config/basebrowser-mac-macho b/embedding/config/basebrowser-mac-macho
index 1a138fb74813..ee82e1c25172 100644
--- a/embedding/config/basebrowser-mac-macho
+++ b/embedding/config/basebrowser-mac-macho
@@ -34,7 +34,8 @@ components/libjsdom.dylib
 ; XPCOM:
 ; 
 libxpcom.dylib 
-
+libxpcom_compat.dylib
+components/libxpcom_compat_c.dylib
 
 
 ; 
diff --git a/embedding/config/basebrowser-unix b/embedding/config/basebrowser-unix
index 591ffe9674af..f078e35cb186 100644
--- a/embedding/config/basebrowser-unix
+++ b/embedding/config/basebrowser-unix
@@ -33,6 +33,8 @@ components/xpcom_ds.xpt
 components/xpcom_io.xpt
 components/xpcom_threads.xpt
 components/xpcom_xpti.xpt
+libxpcom_compat.so
+components/libxpcom_compat_c.so
 
 ; xpconnect
 components/libxpconnect.so
diff --git a/embedding/config/basebrowser-win b/embedding/config/basebrowser-win
index 64a3353772b9..509805349aa9 100644
--- a/embedding/config/basebrowser-win
+++ b/embedding/config/basebrowser-win
@@ -45,6 +45,8 @@ js3250.dll
 ; XPCOM:
 ; 
 xpcom.dll
+xpcom_compat.dll
+components\xpcom_compat_c.dll
 components\xpcom_base.xpt
 components\xpcom_components.xpt
 components\xpcom_ds.xpt