--- configure.in.bak	2008-01-06 17:13:28.000000000 -0500
+++ configure.in	2008-01-06 17:12:29.000000000 -0500
@@ -64,7 +64,7 @@
 ],[AC_MSG_WARN([firefox-plugin not found])])
 	fi
 	if test "$MOZPLUG_CFLAGS" = ""; then
-		PKG_CHECK_MODULES(MOZPLUG,[seamonkey-plugin],[AC_SUBST(MOZPLUG_CFLAGS) MOZPLUG_CFLAGS="${MOZPLUG_CFLAGS} -I`$PKG_CONFIG --variable=includedir seamonkey-plugin`"
+		PKG_CHECK_MODULES(MOZPLUG,[seamonkey-plugin seamonkey-xpcom],[AC_SUBST(MOZPLUG_CFLAGS) MOZPLUG_CFLAGS="${MOZPLUG_CFLAGS} -I`$PKG_CONFIG --variable=includedir seamonkey-plugin`"
 MOZILLA_HOME=`$PKG_CONFIG --variable=libdir seamonkey-plugin`
 ],[AC_MSG_WARN([seamonkey-plugin not found])])
 	fi