--- a/doc/reference/protocols/facebook/Makefile.am	Mon Jun 19 21:54:28 2017 -0400
+++ b/doc/reference/protocols/facebook/Makefile.am	Mon Jun 19 22:49:37 2017 -0400
@@ -61,7 +61,7 @@
 
 # Header files or dirs to ignore when scanning. Use base file/dir names
 # e.g. IGNORE_HFILES=gtkdebug.h gtkintl.h private_code
-IGNORE_HFILES=marshal.h
+IGNORE_HFILES=
 
 # Images to copy into HTML directory.
 # e.g. HTML_IMAGES=$(top_srcdir)/gtk/stock-icons/stock_about_24.png