diff --git a/Makefile b/Makefile
index d77f9a9b0d620eb2c18233ed73de02cfac6c6492..e1073d63a36cbed28f2fbf847f262cd1a245759d 100644
--- a/Makefile
+++ b/Makefile
@@ -1,8 +1,3 @@
-STYLES := css/tufte-css/tufte.css \
-	css/pandoc.css \
-	css/pandoc-solarized.css \
-	css/tufte-extra.css
-
 OPTIONS = --toc
 OPTIONS += --filter=pandoc-numbering
 OPTIONS += --filter=pandoc-crossref