diff --git a/interfaces/cython/cantera/examples/onedim/adiabatic_flame.py b/interfaces/cython/cantera/examples/onedim/adiabatic_flame.py
index f9dfbfd10..27c614d61 100644
--- a/interfaces/cython/cantera/examples/onedim/adiabatic_flame.py
+++ b/interfaces/cython/cantera/examples/onedim/adiabatic_flame.py
@@ -33,6 +33,7 @@ f.show_solution()
 
 # Solve with the energy equation disabled
 f.energy_enabled = False
+f.transport_model = 'Mix'
 f.set_max_jac_age(10, 10)
 f.set_time_step(1e-5, [2, 5, 10, 20])
 f.solve(loglevel=loglevel, refine_grid=False)
diff --git a/interfaces/cython/cantera/examples/onedim/burner_flame.py b/interfaces/cython/cantera/examples/onedim/burner_flame.py
index f2c036e41..e7fccc253 100644
--- a/interfaces/cython/cantera/examples/onedim/burner_flame.py
+++ b/interfaces/cython/cantera/examples/onedim/burner_flame.py
@@ -31,6 +31,7 @@ f.flame.set_transient_tolerances(default=tol_ts)
 f.show_solution()
 
 f.energy_enabled = False
+f.transport_model = 'Mix'
 f.set_max_jac_age(10, 10)
 f.solve(loglevel, refine_grid=False)
 f.save('h2_burner_flame.xml', 'no_energy',
diff --git a/interfaces/cython/cantera/examples/onedim/flame_fixed_T.py b/interfaces/cython/cantera/examples/onedim/flame_fixed_T.py
index 68b18497b..58e370179 100644
--- a/interfaces/cython/cantera/examples/onedim/flame_fixed_T.py
+++ b/interfaces/cython/cantera/examples/onedim/flame_fixed_T.py
@@ -95,6 +95,7 @@ f.show_solution()
 f.energy_enabled = False
 
 # first solve the flame with mixture-averaged transport properties
+f.transport_model = 'Mix'
 f.set_refine_criteria(ratio=3.0, slope=0.3, curve=1)
 f.set_max_jac_age(50, 50)
 f.set_time_step(1.0e-5, [1, 2, 5, 10, 20])