diff --git a/hl.cabal b/hl.cabal
index b29b06e..342a857 100644
--- a/hl.cabal
+++ b/hl.cabal
@@ -13,7 +13,7 @@ cabal-version:       >=1.8
 
 executable hl
   hs-source-dirs:    src/
-  ghc-options:       -Wall -O2
+  ghc-options:       -Wall -O2 -fno-warn-unused-do-bind
   main-is:           Main.hs
   build-depends:     blaze-html,
                      monad-extras,
diff --git a/src/HL/V.hs b/src/HL/V.hs
index c5d0e04..c579bed 100644
--- a/src/HL/V.hs
+++ b/src/HL/V.hs
@@ -19,15 +19,38 @@ import Yesod.Senza as V
 -- Latest Bootstrap requires extra work to get the old grid layout
 -- behaviour of spans. I'll probably move this into senza.
 
+span1 :: [Attribute] -> Senza -> Senza
 span1 xs = div ([class_ "span1 col-md-1"] ++ xs)
+
+span2 :: [Attribute] -> Senza -> Senza
 span2 xs = div ([class_ "span2 col-md-2"] ++ xs)
+
+span3 :: [Attribute] -> Senza -> Senza
 span3 xs = div ([class_ "span3 col-md-3"] ++ xs)
+
+span4 :: [Attribute] -> Senza -> Senza
 span4 xs = div ([class_ "span4 col-md-4"] ++ xs)
+
+span5 :: [Attribute] -> Senza -> Senza
 span5 xs = div ([class_ "span5 col-md-5"] ++ xs)
+
+span6 :: [Attribute] -> Senza -> Senza
 span6 xs = div ([class_ "span6 col-md-6"] ++ xs)
+
+span7 :: [Attribute] -> Senza -> Senza
 span7 xs = div ([class_ "span7 col-md-7"] ++ xs)
+
 span8 xs = div ([class_ "span8 col-md-8"] ++ xs)
+span8 :: [Attribute] -> Senza -> Senza
+
 span9 xs = div ([class_ "span9 col-md-9"] ++ xs)
+span9 :: [Attribute] -> Senza -> Senza
+
 span10 xs = div ([class_ "span10 col-md-10"] ++ xs)
+span10 :: [Attribute] -> Senza -> Senza
+
 span11 xs = div ([class_ "span11 col-md-11"] ++ xs)
+span11 :: [Attribute] -> Senza -> Senza
+
 span12 xs = div ([class_ "span12 col-md-12"] ++ xs)
+span12 :: [Attribute] -> Senza -> Senza
diff --git a/src/HL/V/Template.hs b/src/HL/V/Template.hs
index 4d3a07f..0095aaa 100644
--- a/src/HL/V/Template.hs
+++ b/src/HL/V/Template.hs
@@ -21,7 +21,7 @@ template
 template crumbs ptitle inner =
   skeleton
     ptitle
-    (\cur url -> return ())
+    (\_ _ -> return ())
     (\cur url ->
        div [class_ "template"]
            (do navigation True cur url
@@ -206,6 +206,8 @@ footer r =
             Nothing ->
               a [href "http://www.haskell.org/haskellwiki/"]
                 "Go to haskell.org wiki"
-            Just page ->
-              a [href (toValue ("http://www.haskell.org/haskellwiki/index.php?title=" <> page <> "&action=edit"))]
+            Just pn ->
+              a [href (toValue ("http://www.haskell.org/haskellwiki/index.php?title=" <>
+                                pn <>
+                                "&action=edit"))]
                 "Edit this page"