diff --git a/src/F04GlobalField.cc b/src/F04GlobalField.cc
index 9830817..fb1953e 100644
--- a/src/F04GlobalField.cc
+++ b/src/F04GlobalField.cc
@@ -50,7 +50,7 @@ F04GlobalField* F04GlobalField::object = 0;
 F04GlobalField::F04GlobalField() : G4ElectroMagneticField(),
                              minStep(0.01*CLHEP::mm), deltaChord(3.0*CLHEP::mm),
                              deltaOneStep(0.01*CLHEP::mm), deltaIntersection(0.1*CLHEP::mm),
-                             epsMin(2.5e-7*CLHEP::mm), epsMax(0.05*CLHEP::mm),
+                             epsMin(2.5e-7*CLHEP::mm), epsMax(0.01*CLHEP::mm),
                              fEquation(0), fFieldManager(0), 
                              fFieldPropagator(0), fStepper(0), fChordFinder(0)
 // F04GlobalField::F04GlobalField() : G4MagneticField(),