diff --git a/robot/arlo.py b/robot/arlo.py
index 5e9c120..79eb33f 100644
--- a/robot/arlo.py
+++ b/robot/arlo.py
@@ -14,7 +14,7 @@ FOCAL_LENGTH = 1691
 DEFAULT_CALIBRATION_CODE = "40.40-40.40-40.40_ff-ff-ff-ff"
 
 CAMERA_MATRIX = np.array([[FOCAL_LENGTH,0,512],[0,FOCAL_LENGTH,360],[0,0,1]])
-DIST_COEF = [0,0,0,0]
+DIST_COEF = 0
 
 def test_forward(arlo, l_power, r_power):
     arlo.reset_encoder_counts()