diff --git a/MC/config/PWGEM/ini/pythia8_pp_13600_ForcedDalitz.ini b/MC/config/PWGEM/ini/pythia8_pp_13600_ForcedDalitz.ini
index 17caba124..1cc9c5b5b 100644
--- a/MC/config/PWGEM/ini/pythia8_pp_13600_ForcedDalitz.ini
+++ b/MC/config/PWGEM/ini/pythia8_pp_13600_ForcedDalitz.ini
@@ -1,3 +1,6 @@
+[Diamond]
+width[2]=6.0
+
 [GeneratorPythia8]
 config=${O2DPG_MC_CONFIG_ROOT}/MC/config/PWGEM/pythia8/generator/configPythia_ForcedDalitz.cfg