diff --git a/interfaces/cython/cantera/examples/surface_chemistry/sofc.cti b/interfaces/cython/cantera/examples/surface_chemistry/sofc.cti
index b605815d7..6b594ed45 100644
--- a/interfaces/cython/cantera/examples/surface_chemistry/sofc.cti
+++ b/interfaces/cython/cantera/examples/surface_chemistry/sofc.cti
@@ -8,12 +8,6 @@
 #
 #########################################################################
 
-
-# since Cantera input files are actually executable Python scripts,
-# we can put any valid Python statements in the input file. Here we
-# import the value of R from Cantera.
-from Cantera import GasConstant
-
 # These units will be used by default for any quantities entered
 # without units. Quantities with compound units (e.g. concentration)
 # will be constructed from these - the units of concentration will be
diff --git a/samples/python/fuel_cells/sofc.cti b/samples/python/fuel_cells/sofc.cti
index b605815d7..6b594ed45 100644
--- a/samples/python/fuel_cells/sofc.cti
+++ b/samples/python/fuel_cells/sofc.cti
@@ -8,12 +8,6 @@
 #
 #########################################################################
 
-
-# since Cantera input files are actually executable Python scripts,
-# we can put any valid Python statements in the input file. Here we
-# import the value of R from Cantera.
-from Cantera import GasConstant
-
 # These units will be used by default for any quantities entered
 # without units. Quantities with compound units (e.g. concentration)
 # will be constructed from these - the units of concentration will be