diff --git a/autocnet/transformation/roi.py b/autocnet/transformation/roi.py
index 541eab148679a45b3bd5d0e134b328884d08803f..77b503cfee8ce2ab613cbd6e4933a253052a5580 100644
--- a/autocnet/transformation/roi.py
+++ b/autocnet/transformation/roi.py
@@ -321,7 +321,7 @@ class Roi():
                                         mode=mode,
                                         order=3)
 
-            self._clip_center = tuple(np.array(pixel_locked.shape)[::-1]) / 2.0)
+            self._clip_center = tuple(np.array(pixel_locked.shape)[::-1] / 2.0)
 
             self._clipped_array = img_as_float32(pixel_locked)
         else: