diff --git a/doc/Makefile.am b/doc/Makefile.am
index 8c51a95a..ab73b8d7 100644
--- a/doc/Makefile.am
+++ b/doc/Makefile.am
@@ -35,7 +35,7 @@ doxygen.in:
 	doxygen $(srcdir)/Doxyfile
 endif
 
-$(man_MANS):
+$(man_MANS): footer.txt
 	a2x -d manpage -f manpage --asciidoc-opts="$(ASCIIDOC_OPTS)" $@.txt
 
 # vim:set ts=2 sw=2 noet: