diff --git a/km3buu/output.py b/km3buu/output.py
index 26af2f2b8cf45c60fa73259f9f62fe6a3f52337c..152d8965ee46f621a9636ecf8e18e03bf484fa7e 100644
--- a/km3buu/output.py
+++ b/km3buu/output.py
@@ -170,14 +170,12 @@ EMPTY_KM3NET_HEADER_DICT = {
     "target": "",
     "cut_nu": "0 0 0 0",
     "spectrum": "0",
-    "can": "0 0 0",
     "flux": "0 0 0",
     "coord_origin": "0 0 0",
     "norma": "0 0",
     "tgen": "0",
     "simul": "",
     "primary": "0",
-    "genvol": "0 0 0 0 0"
 }
 
 PARTICLE_MC_STATUS = {