diff --git a/hexrd/ui/create_raw_mask.py b/hexrd/ui/create_raw_mask.py
index 9bb59b7d2..ac5b93117 100644
--- a/hexrd/ui/create_raw_mask.py
+++ b/hexrd/ui/create_raw_mask.py
@@ -2,7 +2,6 @@
 
 from skimage.draw import polygon
 
-from hexrd.ui import constants
 from hexrd.ui.create_hedm_instrument import create_hedm_instrument
 from hexrd.ui.hexrd_config import HexrdConfig
 from hexrd.ui.utils import add_sample_points