diff --git a/jdaviz/configs/cubeviz/plugins/spectral_extraction/spectral_extraction.py b/jdaviz/configs/cubeviz/plugins/spectral_extraction/spectral_extraction.py
index 4aa5b43a0f..20beb89de9 100644
--- a/jdaviz/configs/cubeviz/plugins/spectral_extraction/spectral_extraction.py
+++ b/jdaviz/configs/cubeviz/plugins/spectral_extraction/spectral_extraction.py
@@ -160,7 +160,7 @@ def user_api(self):
         expose = ['function', 'spatial_subset', 'aperture',
                   'add_results', 'collapse_to_spectrum',
                   'wavelength_dependent', 'reference_wavelength',
-                  'aperture_method', 'translate_units']
+                  'aperture_method']
         if self.dev_bg_support:
             expose += ['background', 'bg_wavelength_dependent']
 
diff --git a/jdaviz/configs/cubeviz/plugins/spectral_extraction/tests/test_spectral_extraction.py b/jdaviz/configs/cubeviz/plugins/spectral_extraction/tests/test_spectral_extraction.py
index 9220740580..4b2cd9aa2e 100644
--- a/jdaviz/configs/cubeviz/plugins/spectral_extraction/tests/test_spectral_extraction.py
+++ b/jdaviz/configs/cubeviz/plugins/spectral_extraction/tests/test_spectral_extraction.py
@@ -405,13 +405,13 @@ def test_unit_translation(cubeviz_helper):
     # store to test second time after calling translate_units
     mjy_sr_data1 = collapsed_spec._data[0]
 
-    extract_plg.translate_units(collapsed_spec)
+    extract_plg._obj.translate_units(collapsed_spec)
 
     assert collapsed_spec._unit == u.MJy / u.sr
     # some value in MJy/sr that we know the outcome after translation
     assert np.allclose(collapsed_spec._data[0], 8751.653)
 
-    extract_plg.translate_units(collapsed_spec)
+    extract_plg._obj.translate_units(collapsed_spec)
 
     # translating again returns the original units
     assert collapsed_spec._unit == u.Jy / u.pix