diff --git a/spectral_cube/spectral_cube.py b/spectral_cube/spectral_cube.py
index 5dca663ce..0183dec5f 100644
--- a/spectral_cube/spectral_cube.py
+++ b/spectral_cube/spectral_cube.py
@@ -430,7 +430,8 @@ def apply_numpy_function(self, function, fill=np.nan,
                                          includemask=includemask,
                                          progressbar=progressbar, **kwargs)
         elif how == 'ray':
-            out = self.apply_function(function, **kwargs)
+            out = self.apply_function(function, progressbar=progressbar,
+                                      **kwargs)
         elif how not in ['auto', 'cube']:
             warnings.warn("Cannot use how=%s. Using how=cube" % how,
                           UnsupportedIterationStrategyWarning)