diff --git a/src/flux/shape.py b/src/flux/shape.py
index 895d204..336f193 100644
--- a/src/flux/shape.py
+++ b/src/flux/shape.py
@@ -198,9 +198,6 @@ def get_direct_irradiance(self, F0, Dsun, basemesh=None, eps=None):
             directions.
 
         '''
-        if basemesh == None:
-            basemesh = self
-
         # Determine which rays escaped (i.e., can see the sun)
         if basemesh is None:
             I = ~self.is_occluded(np.arange(self.num_faces), Dsun)