diff --git a/src/cristallina/utils.py b/src/cristallina/utils.py
index d309070..8a252fb 100644
--- a/src/cristallina/utils.py
+++ b/src/cristallina/utils.py
@@ -92,6 +92,7 @@ class ROI:
     @property
     def rows(self):
         return slice(self.bottom, self.top)
+    
     @property
     def LeftRightBottomTop(self):
         return [self.left, self.right, self.bottom, self.top]