--- a2ps-4.14/man/Makefile.maint
+++ a2ps-4.14/man/Makefile.maint
@@ -4,7 +4,7 @@
 HELP2MAN-run = $(PERL) -w -- $(srcdir)/$(HELP2MAN)
 
 # Depend on configure.in to get version number changes.
-$(man_MANS): $(top_srcdir)/configure.in common.x
+$(man_MANS): $(top_srcdir)/configure.ac common.x
 
 # Depend on the source file containing the --help text.
 # Filter out irregular cases.
