diff --git a/Yesod/Default/Main.hs b/Yesod/Default/Main.hs
--- a/Yesod/Default/Main.hs
+++ b/Yesod/Default/Main.hs
@@ -15,6 +15,9 @@
 import Network.Wai.Middleware.Autohead (autohead)
 import Network.Wai.Middleware.Jsonp (jsonp)
 import Control.Monad (when)
+import System.Environment (getEnvironment)
+import Data.Maybe (fromMaybe)
+import Safe (readMay)
 
 #ifndef WINDOWS
 import qualified System.Posix.Signals as Signal
@@ -43,7 +46,7 @@
         } app
 
 -- | Run your application continously, listening for SIGINT and exiting
---   when recieved
+--   when received
 --
 --   > withYourSite :: AppConfig DefaultEnv -> Logger -> (Application -> IO a) -> IO ()
 --   > withYourSite conf logger f = do
@@ -81,7 +84,9 @@
     -> IO (Int, Application)
 defaultDevelApp load getApp = do
     conf   <- load
-    let p = appPort conf
-    putStrLn $ "Devel application launched: http://localhost:" ++ show p
+    env <- getEnvironment
+    let p = fromMaybe (appPort conf) $ lookup "PORT" env >>= readMay
+        pdisplay = fromMaybe p $ lookup "DISPLAY_PORT" env >>= readMay
+    putStrLn $ "Devel application launched: http://localhost:" ++ show pdisplay
     app <- getApp conf
     return (p, app)
diff --git a/yesod-default.cabal b/yesod-default.cabal
--- a/yesod-default.cabal
+++ b/yesod-default.cabal
@@ -1,5 +1,5 @@
 name:            yesod-default
-version:         1.1.0.2
+version:         1.1.1
 license:         MIT
 license-file:    LICENSE
 author:          Patrick Brisbin
@@ -34,6 +34,7 @@
                    , unordered-containers
                    , hamlet                >= 1.1     && < 1.2
                    , data-default
+                   , safe
 
     if !os(windows)
          build-depends: unix