diff --git a/unison.spec b/unison.spec
index fded27d..f91c754 100644
--- a/unison.spec
+++ b/unison.spec
@@ -97,6 +97,7 @@ do
   test -f doc/unison-manual.$ext || continue
   mkdir -vp %buildroot%_defaultdocdir/%pkg
   cp doc/unison-manual.$ext %buildroot%_defaultdocdir/%pkg
+  echo '%%dir %_defaultdocdir/%pkg' >> files
   echo "%%doc %_defaultdocdir/%pkg/unison-manual.$ext" >> files
 done
 %else