diff --git a/build/commands.py b/build/commands.py
index aef12afb..450da601 100644
--- a/build/commands.py
+++ b/build/commands.py
@@ -360,7 +360,7 @@ class InternalCommands:
 			
 		elif generator.startswith('Xcode'):
 			print 'Opening with %s...' % generator
-			self.open_internal(xcodeproj_filepath(), 'open')
+			self.open_internal(self.xcodeproj_filepath(), 'open')
 			
 		else:
 			raise Exception('Not supported with generator: ' + generator)