Index: dialin/dg/load_cells.py
===================================================================
diff -u -rc4cc4fadbc2481886fa97abbe0d2b1efe2042126 -r49828431dbc46be811bef6423b0c8794df5f64a8
--- dialin/dg/load_cells.py	(.../load_cells.py)	(revision c4cc4fadbc2481886fa97abbe0d2b1efe2042126)
+++ dialin/dg/load_cells.py	(.../load_cells.py)	(revision 49828431dbc46be811bef6423b0c8794df5f64a8)
@@ -110,7 +110,7 @@
             3 = B2 \n
         """
 
-        if add_reservoir_weight is not False:
+        if add_reservoir_weight:
             grm = float_to_bytearray(grams + self.EMPTY_RESERVOIR_WEIGHT_GRAMS)
         else:
             grm = float_to_bytearray(grams)