diff --git a/Hlt/Hlt2Conf/python/Hlt2Conf/lines/charmonium_to_dimuon.py b/Hlt/Hlt2Conf/python/Hlt2Conf/lines/charmonium_to_dimuon.py
index bda9026598c277953e5524d636d3d7f4568023ab..b4128fc005673ba05e6004ee8e8e19617bb30a85 100644
--- a/Hlt/Hlt2Conf/python/Hlt2Conf/lines/charmonium_to_dimuon.py
+++ b/Hlt/Hlt2Conf/python/Hlt2Conf/lines/charmonium_to_dimuon.py
@@ -38,8 +38,8 @@ _JPSI_PDG_MASS_ = 3096.9 * MeV
 _PSI2S_PDG_MASS_ = 3686.1 * MeV
 _MASSWINDOW_LOW_JPSI_ = 150 * MeV
 _MASSWINDOW_HIGH_JPSI_ = 150 * MeV
-_MASSWINDOW_LOW_PSI2S_ = 120 * MeV
-_MASSWINDOW_HIGH_PSI2S_ = 120 * MeV
+_MASSWINDOW_LOW_PSI2S_ = 150 * MeV
+_MASSWINDOW_HIGH_PSI2S_ = 150 * MeV
 _MASSMIN_JPSI = _JPSI_PDG_MASS_ - _MASSWINDOW_LOW_JPSI_
 _MASSMAX_JPSI = _JPSI_PDG_MASS_ + _MASSWINDOW_HIGH_JPSI_
 _MASSMIN_PSI2S = _PSI2S_PDG_MASS_ - _MASSWINDOW_LOW_PSI2S_