diff --git a/samplelib/Sample.py b/samplelib/Sample.py
index 58c92d5..80910d5 100644
--- a/samplelib/Sample.py
+++ b/samplelib/Sample.py
@@ -61,7 +61,7 @@ class Sample(object):
 
     def get_pitch_yaw_roll(self):
         if self.pitch_yaw_roll is None:
-            self.pitch_yaw_roll = LandmarksProcessor.estimate_pitch_yaw_roll(landmarks)
+            self.pitch_yaw_roll = LandmarksProcessor.estimate_pitch_yaw_roll(landmarks, size=self.shape[1])
         return self.pitch_yaw_roll
 
     def set_filename_offset_size(self, filename, offset, size):