diff --git a/xcode/commonFastfile b/xcode/commonFastfile
index a0f4641..28cca96 100644
--- a/xcode/commonFastfile
+++ b/xcode/commonFastfile
@@ -439,10 +439,11 @@ end
 # Build phases
 
 def run_code_generation_phase_if_needed(options)
+  appName = options[:appName] || $appName
   code_generation_script_path = File.expand_path "../.githooks/scripts/CodeGen.sh"
-  xcodeproj_path = File.expand_path options[:xcodeproj_path]
+  workspace_path = File.expand_path "../#{appName}.xcworkspace"
 
   if File.exists? code_generation_script_path
-    sh(code_generation_script_path, xcodeproj_path)
+    sh(code_generation_script_path, workspace_path)
   end
 end