diff --git a/gemini_instruments/ghost/adclass.py b/gemini_instruments/ghost/adclass.py
index 4db3e2b60..3226a89a2 100644
--- a/gemini_instruments/ghost/adclass.py
+++ b/gemini_instruments/ghost/adclass.py
@@ -395,7 +395,7 @@ def calibration_key(self):
 
     # FIXME Remove once headers corrected
     @astro_data_descriptor
-    @gmu.return_selected_units
+    @gmu.return_requested_units
     def central_wavelength(self): # pragma: no cover
         """
         Dummy to work around current Gemini cal_mgr