diff --git a/license-dialog b/license-dialog
index 12f4b2a..b01e2ef 100755
--- a/license-dialog
+++ b/license-dialog
@@ -69,7 +69,7 @@ licenza.close()
 def center(self):
     screen = QDesktopWidget().screenGeometry()
     size = self.geometry()
-    self.move((screen.width()-size.width())/2, (screen.height()-size.height())/2)
+    self.move(int((screen.width()-size.width())/2), int((screen.height()-size.height())/2))
 
 class Form(QWidget):
 	def __init__(self, parent=None):