diff --git a/doc/Makefile.am b/doc/Makefile.am
index d26f830f8e..6cdd66d517 100644
--- a/doc/Makefile.am
+++ b/doc/Makefile.am
@@ -38,7 +38,7 @@ EXTRA_DIST = HACKING asciidoc-helper.sh                      \
              $(html_in) $(man_in) $(txt_in)                  \
              tor-rpm-creation.txt                            \
              tor-win32-mingw-creation.txt spec/README        \
-	     state-contents.txt
+             state-contents.txt
 
 docdir = @docdir@