diff --git a/samples/python/onedim/diffusion_flame_batch.py b/samples/python/onedim/diffusion_flame_batch.py
index 82a83feee6e..6937ba700fc 100644
--- a/samples/python/onedim/diffusion_flame_batch.py
+++ b/samples/python/onedim/diffusion_flame_batch.py
@@ -26,9 +26,6 @@
 import cantera as ct
 
 
-import warnings
-warnings.filterwarnings("error", module=".*")
-
 class FlameExtinguished(Exception):
     pass
 
@@ -52,7 +49,6 @@ class FlameExtinguished(Exception):
 
 reaction_mechanism = 'h2o2.yaml'
 gas = ct.Solution(reaction_mechanism)
-gas.reactant_stoich_coeffs3
 width = 18e-3  # 18mm wide
 f = ct.CounterflowDiffusionFlame(gas, width=width)