diff --git a/xwrf/grid.py b/xwrf/grid.py
index d36a2a0c..10166938 100644
--- a/xwrf/grid.py
+++ b/xwrf/grid.py
@@ -102,7 +102,7 @@ def add_horizontal_projection_coordinates(dataset):
     )
     dataset['west_east'] = (
         'west_east',
-        south_north,
+        west_east,
         {'units': 'm', 'standard_name': 'projection_x_coordinate', 'axis': 'X'},
     )