diff --git a/pybamm/solvers/c_solvers/idaklu/casadi_functions.hpp b/pybamm/solvers/c_solvers/idaklu/casadi_functions.hpp
index 38b014a121..d29cb7c961 100644
--- a/pybamm/solvers/c_solvers/idaklu/casadi_functions.hpp
+++ b/pybamm/solvers/c_solvers/idaklu/casadi_functions.hpp
@@ -136,7 +136,7 @@ class CasadiFunctions
   CasadiFunction jac_action;
   CasadiFunction mass_action;
   CasadiFunction events;
-  
+
   // NB: cppcheck-suppress unusedStructMember is used because codacy reports
   //     these members as unused even though they are important
   std::vector<CasadiFunction> var_casadi_fcns;  // cppcheck-suppress unusedStructMember