diff --git a/interfaces/cython/cantera/onedim.py b/interfaces/cython/cantera/onedim.py
index a46ba6bd0d..a2f8d88487 100644
--- a/interfaces/cython/cantera/onedim.py
+++ b/interfaces/cython/cantera/onedim.py
@@ -1165,7 +1165,7 @@ def set_initial_guess(self, equilibrate=True):
         will be set to the equilibrium state of the reactants mixture.
         """
 
-        super().set_initial_guess()
+        super().set_initial_guess(equilibrate=equilibrate)
 
         Yu = self.reactants.Y
         Tu = self.reactants.T