diff --git a/doc/design-paper/Makefile.am b/doc/design-paper/Makefile.am
index 0fb3d9dd27..fb94706d07 100644
--- a/doc/design-paper/Makefile.am
+++ b/doc/design-paper/Makefile.am
@@ -23,4 +23,4 @@ tor-design.pdf: cell-struct.pdf interaction.pdf tor-design.bib tor-design.tex us
 
 EXTRA_DIST = cell-struct.fig interaction.fig tor-design.bib usenix.sty latex8.bst tor-design.tex
 
-DISTCLEANFILES = cell-struct.eps interaction.eps cell-struct.pdf interaction.pdf tor-design.aux tor-design.bbl tor-design.blg tor-design.log tor-design.dvi tor-design.ps
+DISTCLEANFILES = cell-struct.eps interaction.eps cell-struct.pdf interaction.pdf tor-design.aux tor-design.bbl tor-design.blg tor-design.log tor-design.dvi tor-design.ps tor-design.pdf