diff --git a/make-pages/Date.hs b/make-pages/Date.hs
index 7a5bb33..c2486b6 100644
--- a/make-pages/Date.hs
+++ b/make-pages/Date.hs
@@ -78,9 +78,12 @@ formatRSS = fromString . format . toTime where
 
 formatSlash :: Date -> Builder
 formatSlash (Date {year, month, day}) = case dayNum day of
-  Nothing -> [b|$year/$month|]
-  Just d  -> [b|$year/$month/$d$q|]
-    where q = if exact day then "" else [b|<span class=q>?</span>|]
+  Nothing -> [b|$year/$mm|]
+  Just d  -> [b|$year/$mm/$dd$q|] where dd = pad2 d
+ where
+  mm = pad2 month
+  q = if exact day then "" else [b|<span class=q>?</span>|]
+  pad2 x = let str = show x in if length str == 1 then '0':str else str
 
 
 nth :: Int -> Builder