diff --git a/spatial_transforms.py b/spatial_transforms.py
index bba9d66..48cb630 100755
--- a/spatial_transforms.py
+++ b/spatial_transforms.py
@@ -336,7 +336,7 @@ def randomize_parameters(self):
         self.scale = self.scales[random.randint(0, len(self.scales) - 1)]
         self.crop_position = self.crop_positions[random.randint(
             0,
-            len(self.scales) - 1)]
+            len(self.crop_positions) - 1)]
 
 
 class MultiScaleRandomCrop(object):