Index: makefile
==================================================================
--- makefile
+++ makefile
@@ -31,14 +31,14 @@
 # The file article_htmls.mark is a zero-byte file that serves only as a marker. If it is older than
 # any of its dependencies (or missing) all of the articles will be rebuilt. Its dependencies are
 # also on the Pollen cache watchlist (see pollen.rkt)
 _article_htmls.mark: $(core-files) $(html-deps) template.html.p
 	raco pollen setup articles/
-	raco pollen render -p -t html articles/*.poly.p
+	raco pollen render -p -t html articles/*.poly.pm
 	raco pollen setup series/
 	raco pollen render -p -t html series/*.poly.pm
-	touch article_htmls.mark
+	touch _article_htmls.mark
 
 # If the rule for article_htmls.mark was triggered, all the article HTML files will already have
 # been re-rendered.  (That rule comes before this one in the list of dependencies for "all") But if
 # not, any individual files that have been edited will get re-rendered.
 $(articles-html): %.html: %.poly.pm