diff --git a/mozilla/webshell/embed/xlib/xt/Makefile.in b/mozilla/webshell/embed/xlib/xt/Makefile.in
index ea9db3d23e0..4ab80472b6d 100644
--- a/mozilla/webshell/embed/xlib/xt/Makefile.in
+++ b/mozilla/webshell/embed/xlib/xt/Makefile.in
@@ -28,6 +28,7 @@ include $(DEPTH)/config/autoconf.mk
 PROGRAM		= embed_xlib_into_xt
 
 CPPSRCS		= \
+			EmbedMozilla.c \
 			nsEmbedXlibIntoXt.cpp \
 			nsSetupRegistry.cpp \
 			$(NULL)