diff --git a/RbcUkqcd.hpp b/RbcUkqcd.hpp
index 2165d9c..522e290 100644
--- a/RbcUkqcd.hpp
+++ b/RbcUkqcd.hpp
@@ -190,6 +190,8 @@ void RbcUkqcd::addC0LightZMobiusLCDSolver(Application &app, const std::string so
   actionPar.Ls = RbcUkqcd::c0LCDPar.Ls;
   actionPar.M5 = RbcUkqcd::c0LCDPar.M5;
   actionPar.mass = RbcUkqcd::c0LCDPar.ml;
+  actionPar.b = 1.;
+  actionPar.c = 0.;
   actionPar.omega = std::vector<std::complex<double>>(RbcUkqcd::c0ZMobiusOmega.begin(),
                                                       RbcUkqcd::c0ZMobiusOmega.end());
   actionPar.boundary = boundary;