diff --git a/constants.h b/constants.h
index 6125471..5d18b97 100644
--- a/constants.h
+++ b/constants.h
@@ -8,7 +8,7 @@ namespace catima {
 constexpr double Ezero = 1E-3; // lowest E to calculate, below taken as 0
 constexpr double logEmin = -3; // log of minimum energy
 constexpr double logEmax = 7.0;  // log of max energy
-constexpr int max_datapoints = 500; // how many datapoints between logEmin and logEmax
+constexpr int max_datapoints = 600; // how many datapoints between logEmin and logEmax
 constexpr int max_storage_data = 60; // number of datapoints which can be stored in cache
 constexpr double numeric_epsilon = 10*std::numeric_limits<double>::epsilon();
 constexpr double Eout_epsilon = 1e-5;  //