diff --git a/nemesis-titan.cabal b/nemesis-titan.cabal
--- a/nemesis-titan.cabal
+++ b/nemesis-titan.cabal
@@ -1,5 +1,5 @@
 Name:                 nemesis-titan
-Version:              2013.7.13
+Version:              2013.7.13.1
 Build-type:           Simple
 Synopsis:             A collection of Nemesis tasks to bootstrap a Haskell project with a focus on continuous integration
 Description:          
diff --git a/src/System/Nemesis/Titan.hs b/src/System/Nemesis/Titan.hs
--- a/src/System/Nemesis/Titan.hs
+++ b/src/System/Nemesis/Titan.hs
@@ -276,14 +276,14 @@
       ].join " "
   in
   defaultConfig {ghc_arg_string = mac_ghc_arg_string}
-  
-titan_mac_app :: String -> FilePath -> String -> String -> Unit
-titan_mac_app _label derivied_data scheme_name target_name = do
-  titan_with_config default_mac_app_config {file_name = _label, label = _label}
+
+titan_mac_app :: String -> String -> FilePath -> String -> String -> Unit
+titan_mac_app _label _file_name derived_data_path scheme_name target_name = do
+  titan_with_config default_mac_app_config {file_name = _file_name, label = _label}
   
   task (_label / "clean") - do
-    sh - printf "rm -rf %s" derivied_data
-    sh - printf "mkdir %s" derivied_data
+    sh - printf "rm -rf %s" derived_data_path
+    sh - printf "mkdir %s" derived_data_path
   
   task (_label / "xcode-build") - do
     sh - printf "cd .. && xcodebuild -scheme %s > /dev/null" scheme_name
@@ -292,7 +292,7 @@
     sh - printf "killall -SIGTERM %s" target_name
   
   task (_label / "run" + ":" + _label / "xcode-build") - do
-    sh - printf "cd %s; find . -name '%s' -exec '{}' \\;" derivied_data target_name
+    sh - printf "cd %s; find . -name '%s' -exec '{}' \\;" derived_data_path target_name
     
 -- Helpers
 safe_spec :: IO () -> IO ExitCode