diff --git a/jdaviz/core/marks.py b/jdaviz/core/marks.py
index b4a913ffe6..4bcd52d2e4 100644
--- a/jdaviz/core/marks.py
+++ b/jdaviz/core/marks.py
@@ -116,7 +116,7 @@ def set_y_unit(self, unit=None):
 
                 if ('_pixel_scale_factor' in spec.meta):
                     eqv += _eqv_pixar_sr(spec.meta['_pixel_scale_factor'])
-                    
+
                 # add equiv for flux <> flux/pix2
                 eqv += _eqv_flux_to_sb_pixel()